20220122211121 has 6 divisors (see below), whose sum is σ = 23521366653810. Its totient is φ = 17331533323776.

The previous prime is 20220122211089. The next prime is 20220122211143. The reversal of 20220122211121 is 12111222102202.

It can be written as a sum of positive squares in only one way, i.e., 10620194570496 + 9599927640625 = 3258864^2 + 3098375^2 .

It is not a de Polignac number, because 20220122211121 - 2⁵ = 20220122211089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220122215121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206327777616 + ... + 206327777713.

It is an arithmetic number, because the mean of its divisors is an integer number (3920227775635).

Almost surely, 2^{20220122211121} is an apocalyptic number.

It is an amenable number.

20220122211121 is a deficient number, since it is larger than the sum of its proper divisors (3301244442689).

20220122211121 is an equidigital number, since it uses as much as digits as its factorization.

20220122211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412655555343 (or 412655555336 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20220122211121 its reverse (12111222102202), we get a palindrome (32331344313323).

The spelling of 20220122211121 in words is "twenty trillion, two hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".