122774681 has 2 divisors, whose sum is σ = 122774682. Its totient is φ = 122774680.

The previous prime is 122774671. The next prime is 122774723. The reversal of 122774681 is 186477221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 8281 = 11080^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 122774681 - 2²² = 118580377 is a prime.

It is a super-2 number, since 2×122774681² = 30147244589303522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122774651) 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, 61387340 + 61387341.

It is an arithmetic number, because the mean of its divisors is an integer number (61387341).

Almost surely, 2^122774681 is an apocalyptic number.

It is an amenable number.

122774681 is a deficient number, since it is larger than the sum of its proper divisors (1).

122774681 is an equidigital number, since it uses as much as digits as its factorization.

122774681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The square root of 122774681 is about 11080.3736850343. The cubic root of 122774681 is about 497.0151244947.

The spelling of 122774681 in words is "one hundred twenty-two million, seven hundred seventy-four thousand, six hundred eighty-one".