221022201221022 has 16 divisors (see below), whose sum is σ = 457287312871440. Its totient is φ = 71133582002112.

The previous prime is 221022201220981. The next prime is 221022201221027. The reversal of 221022201221022 is 220122102220122.

It is a self number, because there is not a number n which added to its sum of digits gives 221022201221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022201221027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635121267703 + ... + 635121268050.

It is an arithmetic number, because the mean of its divisors is an integer number (28580457054465).

Almost surely, 2^{221022201221022} is an apocalyptic number.

221022201221022 is an abundant number, since it is smaller than the sum of its proper divisors (236265111650418).

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

221022201221022 is a wasteful number, since it uses less digits than its factorization.

221022201221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270242535787.

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

Adding to 221022201221022 its reverse (220122102220122), we get a palindrome (441144303441144).

The spelling of 221022201221022 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred one million, two hundred twenty-one thousand, twenty-two".