21211102002210 has 32 divisors (see below), whose sum is σ = 53585941901760. Its totient is φ = 5358594189888.

The previous prime is 21211102002203. The next prime is 21211102002253. The reversal of 21211102002210 is 1220020111212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21211102002210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18606229257 + ... + 18606230396.

It is an arithmetic number, because the mean of its divisors is an integer number (1674560684430).

Almost surely, 2^{21211102002210} is an apocalyptic number.

21211102002210 is an abundant number, since it is smaller than the sum of its proper divisors (32374839899550).

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

21211102002210 is a wasteful number, since it uses less digits than its factorization.

21211102002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37212459682.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21211102002210 its reverse (1220020111212), we get a palindrome (22431122113422).

The spelling of 21211102002210 in words is "twenty-one trillion, two hundred eleven billion, one hundred two million, two thousand, two hundred ten".