122222012122100 has 72 divisors (see below), whose sum is σ = 289740923623200. Its totient is φ = 44381681769600.

The previous prime is 122222012122073. The next prime is 122222012122141. The reversal of 122222012122100 is 1221210222221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77577590 + ... + 79137389.

Almost surely, 2^{122222012122100} is an apocalyptic number.

122222012122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122222012122100 is an abundant number, since it is smaller than the sum of its proper divisors (167518911501100).

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

122222012122100 is a wasteful number, since it uses less digits than its factorization.

122222012122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156715713 (or 156715706 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 122222012122100 its reverse (1221210222221), we get a palindrome (123443222344321).

The spelling of 122222012122100 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, twelve million, one hundred twenty-two thousand, one hundred".