122131301221 has 2 divisors, whose sum is σ = 122131301222. Its totient is φ = 122131301220.

The previous prime is 122131301167. The next prime is 122131301233. The reversal of 122131301221 is 122103131221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61854177025 + 60277124196 = 248705^2 + 245514^2 .

It is an emirp because it is prime and its reverse (122103131221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122131301221 - 2⁷ = 122131301093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122131301021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61065650610 + 61065650611.

It is an arithmetic number, because the mean of its divisors is an integer number (61065650611).

Almost surely, 2^122131301221 is an apocalyptic number.

It is an amenable number.

122131301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122131301221 is an equidigital number, since it uses as much as digits as its factorization.

122131301221 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 122131301221 its reverse (122103131221), we get a palindrome (244234432442).

The spelling of 122131301221 in words is "one hundred twenty-two billion, one hundred thirty-one million, three hundred one thousand, two hundred twenty-one".