122179861457 has 2 divisors, whose sum is σ = 122179861458. Its totient is φ = 122179861456.

The previous prime is 122179861423. The next prime is 122179861471. The reversal of 122179861457 is 754168971221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110886336016 + 11293525441 = 332996^2 + 106271^2 .

It is an emirp because it is prime and its reverse (754168971221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122179861457 - 2⁸ = 122179861201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122179861399 and 122179861408.

It is not a weakly prime, because it can be changed into another prime (122179861417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61089930728 + 61089930729.

It is an arithmetic number, because the mean of its divisors is an integer number (61089930729).

Almost surely, 2^122179861457 is an apocalyptic number.

It is an amenable number.

122179861457 is a deficient number, since it is larger than the sum of its proper divisors (1).

122179861457 is an equidigital number, since it uses as much as digits as its factorization.

122179861457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 53.

The spelling of 122179861457 in words is "one hundred twenty-two billion, one hundred seventy-nine million, eight hundred sixty-one thousand, four hundred fifty-seven".