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22121000022220 = 22511148927675163
BaseRepresentation
bin1010000011110011100100…
…10110010011000011001100
32220022202011112012100201021
411001321302112103003030
510344412302001202340
6115014125213323524
74442122000525021
oct501716226230314
986282145170637
1022121000022220
117059510901490
1225932461965a4
13c46002c79798
1456693aba9548
15285640a01e4a
hex141e725930cc

22121000022220 has 48 divisors (see below), whose sum is σ = 50677615392768. Its totient is φ = 8043934080960.

The previous prime is 22121000022193. The next prime is 22121000022263. The reversal of 22121000022220 is 2222000012122.

It is a junction number, because it is equal to n+sod(n) for n = 22121000022194 and 22121000022203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32426359 + ... + 33101521.

It is an arithmetic number, because the mean of its divisors is an integer number (1055783654016).

Almost surely, 222121000022220 is an apocalyptic number.

22121000022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121000022220 is an abundant number, since it is smaller than the sum of its proper divisors (28556615370548).

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

22121000022220 is a wasteful number, since it uses less digits than its factorization.

22121000022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824110 (or 824108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22121000022220 its reverse (2222000012122), we get a palindrome (24343000034342).

The spelling of 22121000022220 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 148927 297854 595708 675163 744635 1350326 1489270 1638197 2700652 2978540 3276394 3375815 6552788 6751630 7426793 8190985 13503260 14853586 16381970 29707172 32763940 37133965 74267930 148535860 100550000101 201100000202 402200000404 502750000505 1005500001010 1106050001111 2011000002020 2212100002222 4424200004444 5530250005555 11060500011110 22121000022220