122131012321 has 2 divisors, whose sum is σ = 122131012322. Its totient is φ = 122131012320.

The previous prime is 122131012303. The next prime is 122131012331. The reversal of 122131012321 is 123210131221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120006816400 + 2124195921 = 346420^2 + 46089^2 .

It is a cyclic number.

It is not a de Polignac number, because 122131012321 - 2¹³ = 122131004129 is a prime.

It is not a weakly prime, because it can be changed into another prime (122131012331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61065506160 + 61065506161.

It is an arithmetic number, because the mean of its divisors is an integer number (61065506161).

Almost surely, 2^122131012321 is an apocalyptic number.

It is an amenable number.

122131012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

122131012321 is an equidigital number, since it uses as much as digits as its factorization.

122131012321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 122131012321 its reverse (123210131221), we get a palindrome (245341143542).

The spelling of 122131012321 in words is "one hundred twenty-two billion, one hundred thirty-one million, twelve thousand, three hundred twenty-one".