21031222222332 has 72 divisors (see below), whose sum is σ = 60784221449952. Its totient is φ = 6006214972800.

The previous prime is 21031222222273. The next prime is 21031222222391. The reversal of 21031222222332 is 23322222213012.

21031222222332 is a `hidden beast` number, since 2 + 10 + 312 + 2 + 2 + 2 + 2 + 2 + 332 = 666.

It is an interprime number because it is at equal distance from previous prime (21031222222273) and next prime (21031222222391).

It is a super-2 number, since 2×21031222222332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21031222222296 and 21031222222305.

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, 18228519 + ... + 19347902.

It is an arithmetic number, because the mean of its divisors is an integer number (844225297916).

Almost surely, 2^{21031222222332} is an apocalyptic number.

It is an amenable number.

21031222222332 is an abundant number, since it is smaller than the sum of its proper divisors (39752999227620).

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

21031222222332 is a wasteful number, since it uses less digits than its factorization.

21031222222332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37578659 (or 37578654 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21031222222332 its reverse (23322222213012), we get a palindrome (44353444435344).

The spelling of 21031222222332 in words is "twenty-one trillion, thirty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred thirty-two".