21331322034 has 32 divisors (see below), whose sum is σ = 46548552960. Its totient is φ = 6462997200.

The previous prime is 21331322017. The next prime is 21331322069. The reversal of 21331322034 is 43022313312.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21331321995 and 21331322013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454069 + ... + 498839.

It is an arithmetic number, because the mean of its divisors is an integer number (1454642280).

Almost surely, 2^21331322034 is an apocalyptic number.

21331322034 is an abundant number, since it is smaller than the sum of its proper divisors (25217230926).

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

21331322034 is a wasteful number, since it uses less digits than its factorization.

21331322034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52006.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21331322034 its reverse (43022313312), we get a palindrome (64353635346).

The spelling of 21331322034 in words is "twenty-one billion, three hundred thirty-one million, three hundred twenty-two thousand, thirty-four".