21322331032 has 8 divisors (see below), whose sum is σ = 39979370700. Its totient is φ = 10661165512.

The previous prime is 21322330979. The next prime is 21322331081. The reversal of 21322331032 is 23013322312.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 21322330994 and 21322331012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332645682 + ... + 1332645697.

Almost surely, 2^21322331032 is an apocalyptic number.

It is an amenable number.

21322331032 is a deficient number, since it is larger than the sum of its proper divisors (18657039668).

21322331032 is a wasteful number, since it uses less digits than its factorization.

21322331032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665291385 (or 2665291381 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21322331032 its reverse (23013322312), we get a palindrome (44335653344).

The spelling of 21322331032 in words is "twenty-one billion, three hundred twenty-two million, three hundred thirty-one thousand, thirty-two".