21132303210 has 48 divisors (see below), whose sum is σ = 56428969896. Its totient is φ = 5482975104.

The previous prime is 21132303209. The next prime is 21132303233. The reversal of 21132303210 is 1230323112.

21132303210 is a `hidden beast` number, since 2 + 113 + 230 + 321 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20683329489 + 448973721 = 143817^2 + 21189^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3169689 + ... + 3176348.

Almost surely, 2^21132303210 is an apocalyptic number.

21132303210 is an abundant number, since it is smaller than the sum of its proper divisors (35296666686).

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

21132303210 is a wasteful number, since it uses less digits than its factorization.

21132303210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346087 (or 6346084 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21132303210 its reverse (1230323112), we get a palindrome (22362626322).

It can be divided in two parts, 21 and 132303210, that added together give a palindrome (132303231).

The spelling of 21132303210 in words is "twenty-one billion, one hundred thirty-two million, three hundred three thousand, two hundred ten".