122568091 has 4 divisors (see below), whose sum is σ = 122902432. Its totient is φ = 122233752.

The previous prime is 122568077. The next prime is 122568097. The reversal of 122568091 is 190865221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190865221 = 443 ⋅430847.

It is a cyclic number.

It is not a de Polignac number, because 122568091 - 2¹⁵ = 122535323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122568097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166620 + ... + 167353.

It is an arithmetic number, because the mean of its divisors is an integer number (30725608).

Almost surely, 2^122568091 is an apocalyptic number.

122568091 is a deficient number, since it is larger than the sum of its proper divisors (334341).

122568091 is an equidigital number, since it uses as much as digits as its factorization.

122568091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334340.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 122568091 is about 11071.0474210889. The cubic root of 122568091 is about 496.7361961926.

The spelling of 122568091 in words is "one hundred twenty-two million, five hundred sixty-eight thousand, ninety-one".