122112212021 has 2 divisors, whose sum is σ = 122112212022. Its totient is φ = 122112212020.

The previous prime is 122112212011. The next prime is 122112212039. The reversal of 122112212021 is 120212211221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86300812900 + 35811399121 = 293770^2 + 189239^2 .

It is a cyclic number.

It is not a de Polignac number, because 122112212021 - 2¹⁸ = 122111949877 is a prime.

It is a super-2 number, since 2×122112212021² (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 (122112212011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61056106010 + 61056106011.

It is an arithmetic number, because the mean of its divisors is an integer number (61056106011).

Almost surely, 2^122112212021 is an apocalyptic number.

It is an amenable number.

122112212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122112212021 is an equidigital number, since it uses as much as digits as its factorization.

122112212021 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 122112212021 its reverse (120212211221), we get a palindrome (242324423242).

The spelling of 122112212021 in words is "one hundred twenty-two billion, one hundred twelve million, two hundred twelve thousand, twenty-one".