122851081 has 2 divisors, whose sum is σ = 122851082. Its totient is φ = 122851080.

The previous prime is 122850977. The next prime is 122851111. The reversal of 122851081 is 180158221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 84681 = 11080^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 122851081 - 2⁷ = 122850953 is a prime.

It is a super-2 number, since 2×122851081² = 30184776205737122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122851181) 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, 61425540 + 61425541.

It is an arithmetic number, because the mean of its divisors is an integer number (61425541).

Almost surely, 2^122851081 is an apocalyptic number.

It is an amenable number.

122851081 is a deficient number, since it is larger than the sum of its proper divisors (1).

122851081 is an equidigital number, since it uses as much as digits as its factorization.

122851081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 122851081 is about 11083.8206860270. The cubic root of 122851081 is about 497.1181970000.

It can be divided in two parts, 12285 and 1081, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 122851081 in words is "one hundred twenty-two million, eight hundred fifty-one thousand, eighty-one".