221222020202022 has 64 divisors (see below), whose sum is σ = 510876217152000. Its totient is φ = 62553088982016.

The previous prime is 221222020201961. The next prime is 221222020202023. The reversal of 221222020202022 is 220202020222122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 221222020202022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222020202023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164322528 + ... + 165663324.

It is an arithmetic number, because the mean of its divisors is an integer number (7982440893000).

Almost surely, 2^{221222020202022} is an apocalyptic number.

221222020202022 is an abundant number, since it is smaller than the sum of its proper divisors (289654196949978).

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

221222020202022 is a wasteful number, since it uses less digits than its factorization.

221222020202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381405.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 221222020202022 its reverse (220202020222122), we get a palindrome (441424040424144).

The spelling of 221222020202022 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, twenty million, two hundred two thousand, twenty-two".