21130202032 has 10 divisors (see below), whose sum is σ = 40939766468. Its totient is φ = 10565101008.

The previous prime is 21130202011. The next prime is 21130202069. The reversal of 21130202032 is 23020203112.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1320637627 = 21130202032 / (2 + 1 + 1 + 3 + 0 + 2 + 0 + 2 + 0 + 3 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21130201997 and 21130202015.

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 as a sum of consecutive naturals, namely, 660318798 + ... + 660318829.

Almost surely, 2^21130202032 is an apocalyptic number.

It is an amenable number.

21130202032 is a deficient number, since it is larger than the sum of its proper divisors (19809564436).

21130202032 is a wasteful number, since it uses less digits than its factorization.

21130202032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320637635 (or 1320637629 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21130202032 its reverse (23020203112), we get a palindrome (44150405144).

The spelling of 21130202032 in words is "twenty-one billion, one hundred thirty million, two hundred two thousand, thirty-two".