21331330202 has 64 divisors (see below), whose sum is σ = 39945830400. Its totient is φ = 8318082240.

The previous prime is 21331330199. The next prime is 21331330213. The reversal of 21331330202 is 20203313312.

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, 14822999 + ... + 14824437.

It is an arithmetic number, because the mean of its divisors is an integer number (624153600).

Almost surely, 2^21331330202 is an apocalyptic number.

21331330202 is a deficient number, since it is larger than the sum of its proper divisors (18614500198).

21331330202 is a wasteful number, since it uses less digits than its factorization.

21331330202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21331330202 its reverse (20203313312), we get a palindrome (41534643514).

The spelling of 21331330202 in words is "twenty-one billion, three hundred thirty-one million, three hundred thirty thousand, two hundred two".