201221222022210 has 64 divisors (see below), whose sum is σ = 520531317411840. Its totient is φ = 49488344275200.

The previous prime is 201221222022187. The next prime is 201221222022221. The reversal of 201221222022210 is 12220222122102.

It is a super-2 number, since 2×201221222022210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223683105 + ... + 224580884.

It is an arithmetic number, because the mean of its divisors is an integer number (8133301834560).

Almost surely, 2^{201221222022210} is an apocalyptic number.

201221222022210 is an abundant number, since it is smaller than the sum of its proper divisors (319310095389630).

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

201221222022210 is a wasteful number, since it uses less digits than its factorization.

201221222022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448265163.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 201221222022210 its reverse (12220222122102), we get a palindrome (213441444144312).

The spelling of 201221222022210 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, two hundred ten".