122866111 has 2 divisors, whose sum is σ = 122866112. Its totient is φ = 122866110.

The previous prime is 122866109. The next prime is 122866129. The reversal of 122866111 is 111668221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122866111 - 2¹ = 122866109 is a prime.

Together with 122866109, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 122866111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122866151) 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 as a sum of consecutive naturals, namely, 61433055 + 61433056.

It is an arithmetic number, because the mean of its divisors is an integer number (61433056).

Almost surely, 2^122866111 is an apocalyptic number.

122866111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122866111 is an equidigital number, since it uses as much as digits as its factorization.

122866111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 122866111 is about 11084.4986805899. The cubic root of 122866111 is about 497.1384691912.

The spelling of 122866111 in words is "one hundred twenty-two million, eight hundred sixty-six thousand, one hundred eleven".