21013130332 has 48 divisors (see below), whose sum is σ = 39321676800. Its totient is φ = 9796913280.

The previous prime is 21013130287. The next prime is 21013130377. The reversal of 21013130332 is 23303131012.

It is an interprime number because it is at equal distance from previous prime (21013130287) and next prime (21013130377).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501407 + ... + 1515337.

It is an arithmetic number, because the mean of its divisors is an integer number (819201600).

Almost surely, 2^21013130332 is an apocalyptic number.

It is an amenable number.

21013130332 is a deficient number, since it is larger than the sum of its proper divisors (18308546468).

21013130332 is a wasteful number, since it uses less digits than its factorization.

21013130332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266 (or 14264 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21013130332 its reverse (23303131012), we get a palindrome (44316261344).

The spelling of 21013130332 in words is "twenty-one billion, thirteen million, one hundred thirty thousand, three hundred thirty-two".