21252335212 has 12 divisors (see below), whose sum is σ = 37199615656. Its totient is φ = 10623873600.

The previous prime is 21252335207. The next prime is 21252335227. The reversal of 21252335212 is 21253325212.

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, 552573 + ... + 589780.

Almost surely, 2^21252335212 is an apocalyptic number.

It is an amenable number.

21252335212 is a deficient number, since it is larger than the sum of its proper divisors (15947280444).

21252335212 is a wasteful number, since it uses less digits than its factorization.

21252335212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147008 (or 1147006 counting only the distinct ones).

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

The spelling of 21252335212 in words is "twenty-one billion, two hundred fifty-two million, three hundred thirty-five thousand, two hundred twelve".