22121102012232 has 64 divisors (see below), whose sum is σ = 55636110028800. Its totient is φ = 7329256833600.

The previous prime is 22121102012231. The next prime is 22121102012237. The reversal of 22121102012232 is 23221020112122.

It is a junction number, because it is equal to n+sod(n) for n = 22121102012199 and 22121102012208.

It is not an unprimeable number, because it can be changed into a prime (22121102012231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116854857 + ... + 117044007.

It is an arithmetic number, because the mean of its divisors is an integer number (869314219200).

Almost surely, 2^{22121102012232} is an apocalyptic number.

It is an amenable number.

22121102012232 is an abundant number, since it is smaller than the sum of its proper divisors (33515008016568).

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

22121102012232 is a wasteful number, since it uses less digits than its factorization.

22121102012232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218506 (or 218502 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22121102012232 its reverse (23221020112122), we get a palindrome (45342122124354).

The spelling of 22121102012232 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, two hundred thirty-two".