21522650612 has 48 divisors (see below), whose sum is σ = 39442475520. Its totient is φ = 10264320000.

The previous prime is 21522650587. The next prime is 21522650671. The reversal of 21522650612 is 21605622512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3015464 + ... + 3022592.

It is an arithmetic number, because the mean of its divisors is an integer number (821718240).

Almost surely, 2^21522650612 is an apocalyptic number.

It is an amenable number.

21522650612 is a deficient number, since it is larger than the sum of its proper divisors (17919824908).

21522650612 is a wasteful number, since it uses less digits than its factorization.

21522650612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7512 (or 7510 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 21522650612 in words is "twenty-one billion, five hundred twenty-two million, six hundred fifty thousand, six hundred twelve".