122111807 has 8 divisors (see below), whose sum is σ = 127543680. Its totient is φ = 116690200.

The previous prime is 122111791. The next prime is 122111809. The reversal of 122111807 is 708111221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122111807 - 2⁴ = 122111791 is a prime.

It is a super-2 number, since 2×122111807² = 29822586817610498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111809) 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 in 7 ways as a sum of consecutive naturals, for example, 31544 + ... + 35202.

It is an arithmetic number, because the mean of its divisors is an integer number (15942960).

Almost surely, 2^122111807 is an apocalyptic number.

122111807 is a deficient number, since it is larger than the sum of its proper divisors (5431873).

122111807 is a wasteful number, since it uses less digits than its factorization.

122111807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 122111807 is about 11050.4211231971. The cubic root of 122111807 is about 496.1190300849.

The spelling of 122111807 in words is "one hundred twenty-two million, one hundred eleven thousand, eight hundred seven".