21201010022210 has 16 divisors (see below), whose sum is σ = 38182324155192. Its totient is φ = 8475847094400.

The previous prime is 21201010022201. The next prime is 21201010022249. The reversal of 21201010022210 is 1222001010212.

It can be written as a sum of positive squares in 4 ways, for example, as 6182339117761 + 15018670904449 = 2486431^2 + 3875393^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569594771 + ... + 569631990.

Almost surely, 2^{21201010022210} is an apocalyptic number.

21201010022210 is a deficient number, since it is larger than the sum of its proper divisors (16981314132982).

21201010022210 is a wasteful number, since it uses less digits than its factorization.

21201010022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139228629.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21201010022210 its reverse (1222001010212), we get a palindrome (22423011032422).

The spelling of 21201010022210 in words is "twenty-one trillion, two hundred one billion, ten million, twenty-two thousand, two hundred ten".