21532404322 has 64 divisors (see below), whose sum is σ = 40338829440. Its totient is φ = 8474112000.

The previous prime is 21532404319. The next prime is 21532404367. The reversal of 21532404322 is 22340423512.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529218 + ... + 568450.

It is an arithmetic number, because the mean of its divisors is an integer number (630294210).

Almost surely, 2^21532404322 is an apocalyptic number.

21532404322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21532404322 is a deficient number, since it is larger than the sum of its proper divisors (18806425118).

21532404322 is a wasteful number, since it uses less digits than its factorization.

21532404322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39379.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 21532404322 its reverse (22340423512), we get a palindrome (43872827834).

The spelling of 21532404322 in words is "twenty-one billion, five hundred thirty-two million, four hundred four thousand, three hundred twenty-two".