21210102002202 has 16 divisors (see below), whose sum is σ = 42420644945472. Its totient is φ = 7069960510560.

The previous prime is 21210102002161. The next prime is 21210102002231. The reversal of 21210102002202 is 20220020101212.

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, 17745574 + ... + 18903057.

It is an arithmetic number, because the mean of its divisors is an integer number (2651290309092).

Almost surely, 2^{21210102002202} is an apocalyptic number.

21210102002202 is an abundant number, since it is smaller than the sum of its proper divisors (21210542943270).

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

21210102002202 is a wasteful number, since it uses less digits than its factorization.

21210102002202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36745093.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21210102002202 its reverse (20220020101212), we get a palindrome (41430122103414).

The spelling of 21210102002202 in words is "twenty-one trillion, two hundred ten billion, one hundred two million, two thousand, two hundred two".