122081657 has 2 divisors, whose sum is σ = 122081658. Its totient is φ = 122081656.

The previous prime is 122081599. The next prime is 122081681. The reversal of 122081657 is 756180221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76667536 + 45414121 = 8756^2 + 6739^2 .

It is a cyclic number.

It is not a de Polignac number, because 122081657 - 2²⁶ = 54972793 is a prime.

It is equal to p_6953441 and since 122081657 and 6953441 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (122081357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61040828 + 61040829.

It is an arithmetic number, because the mean of its divisors is an integer number (61040829).

Almost surely, 2^122081657 is an apocalyptic number.

It is an amenable number.

122081657 is a deficient number, since it is larger than the sum of its proper divisors (1).

122081657 is an equidigital number, since it uses as much as digits as its factorization.

122081657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 122081657 is about 11049.0568375767. The cubic root of 122081657 is about 496.0781953222.

The spelling of 122081657 in words is "one hundred twenty-two million, eighty-one thousand, six hundred fifty-seven".