122310131221 has 2 divisors, whose sum is σ = 122310131222. Its totient is φ = 122310131220.

The previous prime is 122310131191. The next prime is 122310131231. The reversal of 122310131221 is 122131013221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79538100625 + 42772030596 = 282025^2 + 206814^2 .

It is a cyclic number.

It is not a de Polignac number, because 122310131221 - 2⁷ = 122310131093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122310131231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61155065610 + 61155065611.

It is an arithmetic number, because the mean of its divisors is an integer number (61155065611).

Almost surely, 2^122310131221 is an apocalyptic number.

It is an amenable number.

122310131221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122310131221 is an equidigital number, since it uses as much as digits as its factorization.

122310131221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 122310131221 its reverse (122131013221), we get a palindrome (244441144442).

The spelling of 122310131221 in words is "one hundred twenty-two billion, three hundred ten million, one hundred thirty-one thousand, two hundred twenty-one".