21113013308 has 12 divisors (see below), whose sum is σ = 37052443680. Its totient is φ = 10526600832.

The previous prime is 21113013301. The next prime is 21113013349. The reversal of 21113013308 is 80331031112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113013301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7474868 + ... + 7477691.

It is an arithmetic number, because the mean of its divisors is an integer number (3087703640).

Almost surely, 2^21113013308 is an apocalyptic number.

It is an amenable number.

21113013308 is a deficient number, since it is larger than the sum of its proper divisors (15939430372).

21113013308 is a wasteful number, since it uses less digits than its factorization.

21113013308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14952916 (or 14952914 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 21113013308 in words is "twenty-one billion, one hundred thirteen million, thirteen thousand, three hundred eight".