22521533212 has 12 divisors (see below), whose sum is σ = 39414028360. Its totient is φ = 11260382256.

The previous prime is 22521533183. The next prime is 22521533227. The reversal of 22521533212 is 21233512522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66214 + ... + 222322.

Almost surely, 2^22521533212 is an apocalyptic number.

It is an amenable number.

22521533212 is a deficient number, since it is larger than the sum of its proper divisors (16892495148).

22521533212 is a wasteful number, since it uses less digits than its factorization.

22521533212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192180 (or 192178 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The spelling of 22521533212 in words is "twenty-two billion, five hundred twenty-one million, five hundred thirty-three thousand, two hundred twelve".