22202200121221 has 8 divisors (see below), whose sum is σ = 22406072990840. Its totient is φ = 21998330578368.

The previous prime is 22202200121219. The next prime is 22202200121237. The reversal of 22202200121221 is 12212100220222.

It can be written as a sum of positive squares in 4 ways, for example, as 350595436321 + 21851604684900 = 592111^2 + 4674570^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22202200121221 - 2¹ = 22202200121219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202200121921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13744675 + ... + 15274831.

It is an arithmetic number, because the mean of its divisors is an integer number (2800759123855).

Almost surely, 2^{22202200121221} is an apocalyptic number.

It is an amenable number.

22202200121221 is a deficient number, since it is larger than the sum of its proper divisors (203872869619).

22202200121221 is a wasteful number, since it uses less digits than its factorization.

22202200121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663383.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22202200121221 its reverse (12212100220222), we get a palindrome (34414300341443).

Subtracting from 22202200121221 its reverse (12212100220222), we obtain a palindrome (9990099900999).

The spelling of 22202200121221 in words is "twenty-two trillion, two hundred two billion, two hundred million, one hundred twenty-one thousand, two hundred twenty-one".