122130232331981 has 2 divisors, whose sum is σ = 122130232331982. Its totient is φ = 122130232331980.

The previous prime is 122130232331977. The next prime is 122130232332001. The reversal of 122130232331981 is 189133232031221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64493909256100 + 57636323075881 = 8030810^2 + 7591859^2 .

It is a cyclic number.

It is not a de Polignac number, because 122130232331981 - 2² = 122130232331977 is a prime.

It is a super-2 number, since 2×122130232331981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122130232331281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61065116165990 + 61065116165991.

It is an arithmetic number, because the mean of its divisors is an integer number (61065116165991).

Almost surely, 2^{122130232331981} is an apocalyptic number.

It is an amenable number.

122130232331981 is a deficient number, since it is larger than the sum of its proper divisors (1).

122130232331981 is an equidigital number, since it uses as much as digits as its factorization.

122130232331981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 122130232331981 in words is "one hundred twenty-two trillion, one hundred thirty billion, two hundred thirty-two million, three hundred thirty-one thousand, nine hundred eighty-one".