21220111032232 has 64 divisors (see below), whose sum is σ = 46281001536000. Its totient is φ = 8933635017216.

The previous prime is 21220111032221. The next prime is 21220111032271. The reversal of 21220111032232 is 23223011102212.

It is a super-2 number, since 2×21220111032232² (a number of 27 digits) contains 22 as substring.

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, 11302557 + ... + 13045612.

It is an arithmetic number, because the mean of its divisors is an integer number (723140649000).

Almost surely, 2^{21220111032232} is an apocalyptic number.

It is an amenable number.

21220111032232 is an abundant number, since it is smaller than the sum of its proper divisors (25060890503768).

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

21220111032232 is a wasteful number, since it uses less digits than its factorization.

21220111032232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24348458 (or 24348454 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21220111032232 its reverse (23223011102212), we get a palindrome (44443122134444).

The spelling of 21220111032232 in words is "twenty-one trillion, two hundred twenty billion, one hundred eleven million, thirty-two thousand, two hundred thirty-two".