122321630181521 has 2 divisors, whose sum is σ = 122321630181522. Its totient is φ = 122321630181520.

The previous prime is 122321630181467. The next prime is 122321630181539. The reversal of 122321630181521 is 125181036123221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65499643444225 + 56821986737296 = 8093185^2 + 7538036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122321630181521 is a prime.

It is not a weakly prime, because it can be changed into another prime (122321630181581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61160815090760 + 61160815090761.

It is an arithmetic number, because the mean of its divisors is an integer number (61160815090761).

Almost surely, 2^{122321630181521} is an apocalyptic number.

It is an amenable number.

122321630181521 is a deficient number, since it is larger than the sum of its proper divisors (1).

122321630181521 is an equidigital number, since it uses as much as digits as its factorization.

122321630181521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 122321630181521 in words is "one hundred twenty-two trillion, three hundred twenty-one billion, six hundred thirty million, one hundred eighty-one thousand, five hundred twenty-one".