122238257 has 2 divisors, whose sum is σ = 122238258. Its totient is φ = 122238256.

The previous prime is 122238241. The next prime is 122238283. The reversal of 122238257 is 752832221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119224561 + 3013696 = 10919^2 + 1736^2 .

It is a cyclic number.

It is not a de Polignac number, because 122238257 - 2⁴ = 122238241 is a prime.

It is not a weakly prime, because it can be changed into another prime (122238227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61119128 + 61119129.

It is an arithmetic number, because the mean of its divisors is an integer number (61119129).

Almost surely, 2^122238257 is an apocalyptic number.

It is an amenable number.

122238257 is a deficient number, since it is larger than the sum of its proper divisors (1).

122238257 is an equidigital number, since it uses as much as digits as its factorization.

122238257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 122238257 is about 11056.1411441787. The cubic root of 122238257 is about 496.2902191261.

The spelling of 122238257 in words is "one hundred twenty-two million, two hundred thirty-eight thousand, two hundred fifty-seven".