122300257 has 2 divisors, whose sum is σ = 122300258. Its totient is φ = 122300256.

The previous prime is 122300237. The next prime is 122300267. The reversal of 122300257 is 752003221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120802081 + 1498176 = 10991^2 + 1224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122300257 is a prime.

It is not a weakly prime, because it can be changed into another prime (122300237) 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, 61150128 + 61150129.

It is an arithmetic number, because the mean of its divisors is an integer number (61150129).

Almost surely, 2^122300257 is an apocalyptic number.

It is an amenable number.

122300257 is a deficient number, since it is larger than the sum of its proper divisors (1).

122300257 is an equidigital number, since it uses as much as digits as its factorization.

122300257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 122300257 is about 11058.9446603191. The cubic root of 122300257 is about 496.3741121002.

Adding to 122300257 its reverse (752003221), we get a palindrome (874303478).

The spelling of 122300257 in words is "one hundred twenty-two million, three hundred thousand, two hundred fifty-seven".