21115053002 has 16 divisors (see below), whose sum is σ = 32706415872. Its totient is φ = 10213167360.

The previous prime is 21115052999. The next prime is 21115053067. The reversal of 21115053002 is 20035051112.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 108833 + ... + 232539.

It is an arithmetic number, because the mean of its divisors is an integer number (2044150992).

Almost surely, 2^21115053002 is an apocalyptic number.

21115053002 is a deficient number, since it is larger than the sum of its proper divisors (11591362870).

21115053002 is a wasteful number, since it uses less digits than its factorization.

21115053002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126493.

The product of its (nonzero) digits is 300, while the sum is 20.

The spelling of 21115053002 in words is "twenty-one billion, one hundred fifteen million, fifty-three thousand, two".