2122221221022 has 32 divisors (see below), whose sum is σ = 5106096172800. Its totient is φ = 574435819008.

The previous prime is 2122221220991. The next prime is 2122221221023. The reversal of 2122221221022 is 2201221222212.

It is a super-2 number, since 2×2122221221022² (a number of 25 digits) contains 22 as substring.

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 2122221221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122221221023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329711747 + ... + 1329713342.

It is an arithmetic number, because the mean of its divisors is an integer number (159565505400).

Almost surely, 2^{2122221221022} is an apocalyptic number.

2122221221022 is an abundant number, since it is smaller than the sum of its proper divisors (2983874951778).

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

2122221221022 is a wasteful number, since it uses less digits than its factorization.

2122221221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659425120.

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

Adding to 2122221221022 its reverse (2201221222212), we get a palindrome (4323442443234).

The spelling of 2122221221022 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-two".