21223013032 has 32 divisors (see below), whose sum is σ = 42917603400. Its totient is φ = 9780735744.

The previous prime is 21223013029. The next prime is 21223013059. The reversal of 21223013032 is 23031032212.

It can be written as a sum of positive squares in 4 ways, for example, as 15756776676 + 5466236356 = 125526^2 + 73934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80307 + ... + 221122.

Almost surely, 2^21223013032 is an apocalyptic number.

It is an amenable number.

21223013032 is an abundant number, since it is smaller than the sum of its proper divisors (21694590368).

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

21223013032 is a wasteful number, since it uses less digits than its factorization.

21223013032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302125 (or 302121 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21223013032 its reverse (23031032212), we get a palindrome (44254045244).

The spelling of 21223013032 in words is "twenty-one billion, two hundred twenty-three million, thirteen thousand, thirty-two".