22032321012 has 36 divisors (see below), whose sum is σ = 59976875140. Its totient is φ = 6779175552.

The previous prime is 22032321007. The next prime is 22032321029. The reversal of 22032321012 is 21012323022.

It can be written as a sum of positive squares in 2 ways, for example, as 1642194576 + 20390126436 = 40524^2 + 142794^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23538337 + ... + 23539272.

Almost surely, 2^22032321012 is an apocalyptic number.

It is an amenable number.

22032321012 is an abundant number, since it is smaller than the sum of its proper divisors (37944554128).

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

22032321012 is a wasteful number, since it uses less digits than its factorization.

22032321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47077632 (or 47077627 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22032321012 its reverse (21012323022), we get a palindrome (43044644034).

The spelling of 22032321012 in words is "twenty-two billion, thirty-two million, three hundred twenty-one thousand, twelve".