21310001332 has 24 divisors (see below), whose sum is σ = 37751335776. Its totient is φ = 10523970528.

The previous prime is 21310001311. The next prime is 21310001333. The reversal of 21310001332 is 23310001312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310001333) 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 7 ways as a sum of consecutive naturals, for example, 2288478 + ... + 2297770.

It is an arithmetic number, because the mean of its divisors is an integer number (1572972324).

Almost surely, 2^21310001332 is an apocalyptic number.

It is an amenable number.

21310001332 is a deficient number, since it is larger than the sum of its proper divisors (16441334444).

21310001332 is a wasteful number, since it uses less digits than its factorization.

21310001332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16287 (or 16285 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21310001332 its reverse (23310001312), we get a palindrome (44620002644).

The spelling of 21310001332 in words is "twenty-one billion, three hundred ten million, one thousand, three hundred thirty-two".