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122020210111212 = 2234753800798109
BaseRepresentation
bin11011101111101000001011…
…010001110111001011101100
3121000001000111020111220120000
4123233220023101313023230
5111443134342242024322
61111303151034424300
734462445361615240
oct3357501321671354
9530030436456500
10122020210111212
1135974531602746
1211828401592090
1353115c1a5331a
14221bb49a9a420
15e1905ba543ac
hex6efa0b4772ec

122020210111212 has 60 divisors (see below), whose sum is σ = 364554207993360. Its totient is φ = 34862917173984.

The previous prime is 122020210111207. The next prime is 122020210111229. The reversal of 122020210111212 is 212111012020221.

122020210111212 is a `hidden beast` number, since 1 + 220 + 20 + 210 + 1 + 1 + 1 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26900396787 + ... + 26900401322.

It is an arithmetic number, because the mean of its divisors is an integer number (6075903466556).

Almost surely, 2122020210111212 is an apocalyptic number.

122020210111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122020210111212 is an abundant number, since it is smaller than the sum of its proper divisors (242533997882148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122020210111212 is a wasteful number, since it uses less digits than its factorization.

122020210111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53800798132 (or 53800798121 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122020210111212 its reverse (212111012020221), we get a palindrome (334131222131433).

The spelling of 122020210111212 in words is "one hundred twenty-two trillion, twenty billion, two hundred ten million, one hundred eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 81 84 108 126 162 189 252 324 378 567 756 1134 2268 53800798109 107601596218 161402394327 215203192436 322804788654 376605586763 484207182981 645609577308 753211173526 968414365962 1129816760289 1452621548943 1506422347052 1936828731924 2259633520578 2905243097886 3389450280867 4357864646829 4519267041156 5810486195772 6778900561734 8715729293658 10168350842601 13557801123468 17431458587316 20336701685202 30505052527803 40673403370404 61010105055606 122020210111212