122152111 has 2 divisors, whose sum is σ = 122152112. Its totient is φ = 122152110.

The previous prime is 122152109. The next prime is 122152117. The reversal of 122152111 is 111251221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122152111 - 2¹ = 122152109 is a prime.

It is a super-2 number, since 2×122152111² = 29842276443512642, which contains 22 as substring.

Together with 122152109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122152117) 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, 61076055 + 61076056.

It is an arithmetic number, because the mean of its divisors is an integer number (61076056).

Almost surely, 2^122152111 is an apocalyptic number.

122152111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122152111 is an equidigital number, since it uses as much as digits as its factorization.

122152111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40, while the sum is 16.

The square root of 122152111 is about 11052.2446136520. The cubic root of 122152111 is about 496.1736067945.

The spelling of 122152111 in words is "one hundred twenty-two million, one hundred fifty-two thousand, one hundred eleven".