122111279 has 2 divisors, whose sum is σ = 122111280. Its totient is φ = 122111278.

The previous prime is 122111219. The next prime is 122111281. The reversal of 122111279 is 972111221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122111279 - 2⁸ = 122111023 is a prime.

It is a super-2 number, since 2×122111279² = 29822328918031682, which contains 22 as substring.

Together with 122111281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122111219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055639 + 61055640.

It is an arithmetic number, because the mean of its divisors is an integer number (61055640).

Almost surely, 2^122111279 is an apocalyptic number.

122111279 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111279 is an equidigital number, since it uses as much as digits as its factorization.

122111279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 26.

The square root of 122111279 is about 11050.3972326790. The cubic root of 122111279 is about 496.1183150265.

The spelling of 122111279 in words is "one hundred twenty-two million, one hundred eleven thousand, two hundred seventy-nine".