21500102612 has 24 divisors (see below), whose sum is σ = 39751635840. Its totient is φ = 10146669120.

The previous prime is 21500102597. The next prime is 21500102629. The reversal of 21500102612 is 21620100512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501353 + ... + 542544.

It is an arithmetic number, because the mean of its divisors is an integer number (1656318160).

Almost surely, 2^21500102612 is an apocalyptic number.

It is an amenable number.

21500102612 is a deficient number, since it is larger than the sum of its proper divisors (18251533228).

21500102612 is a wasteful number, since it uses less digits than its factorization.

21500102612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044191 (or 1044189 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 21500102612 in words is "twenty-one billion, five hundred million, one hundred two thousand, six hundred twelve".