21332311210 has 48 divisors (see below), whose sum is σ = 45169219080. Its totient is φ = 7231741440.

The previous prime is 21332311207. The next prime is 21332311219. The reversal of 21332311210 is 1211323312.

It can be written as a sum of positive squares in 4 ways, for example, as 8676736201 + 12655575009 = 93149^2 + 112497^2 .

It is a super-5 number, since 5×21332311210⁵ (a number of 53 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (21332311219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200971 + ... + 288190.

Almost surely, 2^21332311210 is an apocalyptic number.

21332311210 is an abundant number, since it is smaller than the sum of its proper divisors (23836907870).

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

21332311210 is a wasteful number, since it uses less digits than its factorization.

21332311210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489271 (or 489264 counting only the distinct ones).

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

Adding to 21332311210 its reverse (1211323312), we get a palindrome (22543634522).

The spelling of 21332311210 in words is "twenty-one billion, three hundred thirty-two million, three hundred eleven thousand, two hundred ten".