21010020102202 has 32 divisors (see below), whose sum is σ = 32747354357760. Its totient is φ = 10098807081840.

The previous prime is 21010020102083. The next prime is 21010020102209. The reversal of 21010020102202 is 20220102001012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21010020102209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15577249 + ... + 16872187.

It is an arithmetic number, because the mean of its divisors is an integer number (1023354823680).

Almost surely, 2^{21010020102202} is an apocalyptic number.

21010020102202 is a deficient number, since it is larger than the sum of its proper divisors (11737334255558).

21010020102202 is a wasteful number, since it uses less digits than its factorization.

21010020102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296706.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21010020102202 its reverse (20220102001012), we get a palindrome (41230122103214).

The spelling of 21010020102202 in words is "twenty-one trillion, ten billion, twenty million, one hundred two thousand, two hundred two".