21103320202 has 16 divisors (see below), whose sum is σ = 32106715200. Its totient is φ = 10401136480.

The previous prime is 21103320193. The next prime is 21103320239. The reversal of 21103320202 is 20202330112.

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, 1059249 + ... + 1078987.

It is an arithmetic number, because the mean of its divisors is an integer number (2006669700).

Almost surely, 2^21103320202 is an apocalyptic number.

21103320202 is a deficient number, since it is larger than the sum of its proper divisors (11003394998).

21103320202 is a wasteful number, since it uses less digits than its factorization.

21103320202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27341.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21103320202 its reverse (20202330112), we get a palindrome (41305650314).

The spelling of 21103320202 in words is "twenty-one billion, one hundred three million, three hundred twenty thousand, two hundred two".