22112012120100 has 144 divisors (see below), whose sum is σ = 77418056677248. Its totient is φ = 4756869826560.

The previous prime is 22112012120089. The next prime is 22112012120113. The reversal of 22112012120100 is 102121021122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22112012120100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 309656347 + ... + 309727746.

It is an arithmetic number, because the mean of its divisors is an integer number (537625393592).

Almost surely, 2^{22112012120100} is an apocalyptic number.

22112012120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112012120100 is an abundant number, since it is smaller than the sum of its proper divisors (55306044557148).

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

22112012120100 is a wasteful number, since it uses less digits than its factorization.

22112012120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619384134 (or 619384127 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22112012120100 its reverse (102121021122), we get a palindrome (22214133141222).

The spelling of 22112012120100 in words is "twenty-two trillion, one hundred twelve billion, twelve million, one hundred twenty thousand, one hundred".