21321311032 has 32 divisors (see below), whose sum is σ = 45732204000. Its totient is φ = 9128968704.

The previous prime is 21321311021. The next prime is 21321311051. The reversal of 21321311032 is 23011312312.

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 7 ways as a sum of consecutive naturals, for example, 122733 + ... + 240220.

It is an arithmetic number, because the mean of its divisors is an integer number (1429131375).

Almost surely, 2^21321311032 is an apocalyptic number.

It is an amenable number.

21321311032 is an abundant number, since it is smaller than the sum of its proper divisors (24410892968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21321311032 is a wasteful number, since it uses less digits than its factorization.

21321311032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364015 (or 364011 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21321311032 its reverse (23011312312), we get a palindrome (44332623344).

The spelling of 21321311032 in words is "twenty-one billion, three hundred twenty-one million, three hundred eleven thousand, thirty-two".