21132303330 has 16 divisors (see below), whose sum is σ = 50717528064. Its totient is φ = 5635280880.

The previous prime is 21132303299. The next prime is 21132303337. The reversal of 21132303330 is 3330323112.

It is a super-2 number, since 2×21132303330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21132303297 and 21132303306.

It is not an unprimeable number, because it can be changed into a prime (21132303337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352205026 + ... + 352205085.

It is an arithmetic number, because the mean of its divisors is an integer number (3169845504).

Almost surely, 2^21132303330 is an apocalyptic number.

21132303330 is an abundant number, since it is smaller than the sum of its proper divisors (29585224734).

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

21132303330 is a wasteful number, since it uses less digits than its factorization.

21132303330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704410121.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21132303330 its reverse (3330323112), we get a palindrome (24462626442).

The spelling of 21132303330 in words is "twenty-one billion, one hundred thirty-two million, three hundred three thousand, three hundred thirty".