21225233322 has 12 divisors (see below), whose sum is σ = 45988005570. Its totient is φ = 7075077768.

The previous prime is 21225233273. The next prime is 21225233339. The reversal of 21225233322 is 22333252212.

It can be written as a sum of positive squares in only one way, i.e., 14387762601 + 6837470721 = 119949^2 + 82689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589589797 + ... + 589589832.

Almost surely, 2^21225233322 is an apocalyptic number.

21225233322 is an abundant number, since it is smaller than the sum of its proper divisors (24762772248).

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

21225233322 is a wasteful number, since it uses less digits than its factorization.

21225233322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179179637 (or 1179179634 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

Adding to 21225233322 its reverse (22333252212), we get a palindrome (43558485534).

The spelling of 21225233322 in words is "twenty-one billion, two hundred twenty-five million, two hundred thirty-three thousand, three hundred twenty-two".