21330211202 has 16 divisors (see below), whose sum is σ = 34341472152. Its totient is φ = 9900241920.

The previous prime is 21330211181. The next prime is 21330211211. The reversal of 21330211202 is 20211203312.

It can be written as a sum of positive squares in 4 ways, for example, as 18571965841 + 2758245361 = 136279^2 + 52519^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4294499 + ... + 4299462.

Almost surely, 2^21330211202 is an apocalyptic number.

21330211202 is a deficient number, since it is larger than the sum of its proper divisors (13011260950).

21330211202 is a wasteful number, since it uses less digits than its factorization.

21330211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594053.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21330211202 its reverse (20211203312), we get a palindrome (41541414514).

The spelling of 21330211202 in words is "twenty-one billion, three hundred thirty million, two hundred eleven thousand, two hundred two".