122211122021 has 2 divisors, whose sum is σ = 122211122022. Its totient is φ = 122211122020.

The previous prime is 122211122017. The next prime is 122211122051. The reversal of 122211122021 is 120221112221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96059704225 + 26151417796 = 309935^2 + 161714^2 .

It is a cyclic number.

It is not a de Polignac number, because 122211122021 - 2² = 122211122017 is a prime.

It is a super-2 number, since 2×122211122021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122211122051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61105561010 + 61105561011.

It is an arithmetic number, because the mean of its divisors is an integer number (61105561011).

Almost surely, 2^122211122021 is an apocalyptic number.

It is an amenable number.

122211122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122211122021 is an equidigital number, since it uses as much as digits as its factorization.

122211122021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122211122021 its reverse (120221112221), we get a palindrome (242432234242).

The spelling of 122211122021 in words is "one hundred twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".