122771081 has 2 divisors, whose sum is σ = 122771082. Its totient is φ = 122771080.

The previous prime is 122771071. The next prime is 122771147. The reversal of 122771081 is 180177221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96924025 + 25847056 = 9845^2 + 5084^2 .

It is a cyclic number.

It is not a de Polignac number, because 122771081 - 2¹⁰ = 122770057 is a prime.

It is a super-2 number, since 2×122771081² = 30145476659817122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122771021) 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, 61385540 + 61385541.

It is an arithmetic number, because the mean of its divisors is an integer number (61385541).

Almost surely, 2^122771081 is an apocalyptic number.

It is an amenable number.

122771081 is a deficient number, since it is larger than the sum of its proper divisors (1).

122771081 is an equidigital number, since it uses as much as digits as its factorization.

122771081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 122771081 is about 11080.2112344486. The cubic root of 122771081 is about 497.0102666203.

The spelling of 122771081 in words is "one hundred twenty-two million, seven hundred seventy-one thousand, eighty-one".