122688199 has 4 divisors (see below), whose sum is σ = 124767720. Its totient is φ = 120608680.

The previous prime is 122688197. The next prime is 122688217. The reversal of 122688199 is 991886221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122688199 - 2¹ = 122688197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122688197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039672 + ... + 1039789.

It is an arithmetic number, because the mean of its divisors is an integer number (31191930).

Almost surely, 2^122688199 is an apocalyptic number.

122688199 is a deficient number, since it is larger than the sum of its proper divisors (2079521).

122688199 is an equidigital number, since it uses as much as digits as its factorization.

122688199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079520.

The product of its digits is 124416, while the sum is 46.

The square root of 122688199 is about 11076.4705118553. The cubic root of 122688199 is about 496.8983985869.

The spelling of 122688199 in words is "one hundred twenty-two million, six hundred eighty-eight thousand, one hundred ninety-nine".