21322005004 has 6 divisors (see below), whose sum is σ = 37313508764. Its totient is φ = 10661002500.

The previous prime is 21322004987. The next prime is 21322005049. The reversal of 21322005004 is 40050022312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665250622 + ... + 2665250629.

Almost surely, 2^21322005004 is an apocalyptic number.

It is an amenable number.

21322005004 is a deficient number, since it is larger than the sum of its proper divisors (15991503760).

21322005004 is a wasteful number, since it uses less digits than its factorization.

21322005004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330501255 (or 5330501253 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 21322005004 its reverse (40050022312), we get a palindrome (61372027316).

The spelling of 21322005004 in words is "twenty-one billion, three hundred twenty-two million, five thousand, four".