21122675512 has 16 divisors (see below), whose sum is σ = 40162834800. Its totient is φ = 10412586240.

The previous prime is 21122675461. The next prime is 21122675513. The reversal of 21122675512 is 21557622112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122675513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18593337 + ... + 18594472.

It is an arithmetic number, because the mean of its divisors is an integer number (2510177175).

Almost surely, 2^21122675512 is an apocalyptic number.

It is an amenable number.

21122675512 is a deficient number, since it is larger than the sum of its proper divisors (19040159288).

21122675512 is a wasteful number, since it uses less digits than its factorization.

21122675512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37187886 (or 37187882 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The spelling of 21122675512 in words is "twenty-one billion, one hundred twenty-two million, six hundred seventy-five thousand, five hundred twelve".