122785081 has 4 divisors (see below), whose sum is σ = 125640592. Its totient is φ = 119929572.

The previous prime is 122785073. The next prime is 122785093. The reversal of 122785081 is 180587221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122785081 - 2³ = 122785073 is a prime.

It is a super-2 number, since 2×122785081² = 30152352232353122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122785181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427691 + ... + 1427776.

It is an arithmetic number, because the mean of its divisors is an integer number (31410148).

Almost surely, 2^122785081 is an apocalyptic number.

It is an amenable number.

122785081 is a deficient number, since it is larger than the sum of its proper divisors (2855511).

122785081 is an equidigital number, since it uses as much as digits as its factorization.

122785081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855510.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 122785081 is about 11080.8429733482. The cubic root of 122785081 is about 497.0291578206.

The spelling of 122785081 in words is "one hundred twenty-two million, seven hundred eighty-five thousand, eighty-one".