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122212010020 = 2256110600501
BaseRepresentation
bin111000111010001100…
…1110100100000100100
3102200110011110100210111
41301310121310200210
54000242233310040
6132050551302404
711554345642132
oct1616431644044
9380404410714
10122212010020
1147914547a81
121b82867aa04
13b6a8562439
145cb502c752
1532a4295dea
hex1c74674824

122212010020 has 12 divisors (see below), whose sum is σ = 256645221084. Its totient is φ = 48884804000.

The previous prime is 122212010003. The next prime is 122212010021. The reversal of 122212010020 is 20010212221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13670754084 + 108541255936 = 116922^2 + 329456^2 .

It is not an unprimeable number, because it can be changed into a prime (122212010021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055300231 + ... + 3055300270.

It is an arithmetic number, because the mean of its divisors is an integer number (21387101757).

Almost surely, 2122212010020 is an apocalyptic number.

122212010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122212010020 is an abundant number, since it is smaller than the sum of its proper divisors (134433211064).

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

122212010020 is a wasteful number, since it uses less digits than its factorization.

122212010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110600510 (or 6110600508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122212010020 its reverse (20010212221), we get a palindrome (142222222241).

The spelling of 122212010020 in words is "one hundred twenty-two billion, two hundred twelve million, ten thousand, twenty".

Divisors: 1 2 4 5 10 20 6110600501 12221201002 24442402004 30553002505 61106005010 122212010020