122112111 has 12 divisors (see below), whose sum is σ = 178963736. Its totient is φ = 74007120.

The previous prime is 122112061. The next prime is 122112113. The reversal of 122112111 is 111211221.

It is not a de Polignac number, because 122112111 - 2⁶ = 122112047 is a prime.

It is a super-2 number, since 2×122112111² = 29822735305752642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167836 + ... + 168561.

Almost surely, 2^122112111 is an apocalyptic number.

122112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122112111 is a deficient number, since it is larger than the sum of its proper divisors (56851625).

122112111 is a wasteful number, since it uses less digits than its factorization.

122112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336422 (or 336411 counting only the distinct ones).

The product of its digits is 8, while the sum is 12.

The square root of 122112111 is about 11050.4348783204. The cubic root of 122112111 is about 496.1194417843.

Adding to 122112111 its reverse (111211221), we get a palindrome (233323332).

The spelling of 122112111 in words is "one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".