201221210222202 has 16 divisors (see below), whose sum is σ = 403262058781152. Its totient is φ = 66937130351280.

The previous prime is 201221210222161. The next prime is 201221210222237. The reversal of 201221210222202 is 202222012122102.

It is a super-2 number, since 2×201221210222202² (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 7 ways as a sum of consecutive naturals, for example, 34151594173 + ... + 34151600064.

It is an arithmetic number, because the mean of its divisors is an integer number (25203878673822).

Almost surely, 2^{201221210222202} is an apocalyptic number.

201221210222202 is an abundant number, since it is smaller than the sum of its proper divisors (202040848558950).

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

201221210222202 is a wasteful number, since it uses less digits than its factorization.

201221210222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68303194733.

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

Adding to 201221210222202 its reverse (202222012122102), we get a palindrome (403443222344304).

The spelling of 201221210222202 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, two hundred two".