21113013332 has 24 divisors (see below), whose sum is σ = 38897960640. Its totient is φ = 9999469440.

The previous prime is 21113013301. The next prime is 21113013349. The reversal of 21113013332 is 23331031112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671753 + ... + 702479.

It is an arithmetic number, because the mean of its divisors is an integer number (1620748360).

Almost surely, 2^21113013332 is an apocalyptic number.

It is an amenable number.

21113013332 is a deficient number, since it is larger than the sum of its proper divisors (17784947308).

21113013332 is a wasteful number, since it uses less digits than its factorization.

21113013332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39791 (or 39789 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21113013332 its reverse (23331031112), we get a palindrome (44444044444).

The spelling of 21113013332 in words is "twenty-one billion, one hundred thirteen million, thirteen thousand, three hundred thirty-two".