123022091 has 2 divisors, whose sum is σ = 123022092. Its totient is φ = 123022090.

The previous prime is 123022057. The next prime is 123022103. The reversal of 123022091 is 190220321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123022091 - 2²⁶ = 55913227 is a prime.

It is not a weakly prime, because it can be changed into another prime (123022051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61511045 + 61511046.

It is an arithmetic number, because the mean of its divisors is an integer number (61511046).

Almost surely, 2^123022091 is an apocalyptic number.

123022091 is a deficient number, since it is larger than the sum of its proper divisors (1).

123022091 is an equidigital number, since it uses as much as digits as its factorization.

123022091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 123022091 is about 11091.5324008903. The cubic root of 123022091 is about 497.3487546440.

The spelling of 123022091 in words is "one hundred twenty-three million, twenty-two thousand, ninety-one".