122189823 has 32 divisors (see below), whose sum is σ = 215884800. Its totient is φ = 66784608.

The previous prime is 122189819. The next prime is 122189839. The reversal of 122189823 is 328981221.

It is not a de Polignac number, because 122189823 - 2² = 122189819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122189813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9708 + ... + 18401.

It is an arithmetic number, because the mean of its divisors is an integer number (6746400).

Almost surely, 2^122189823 is an apocalyptic number.

122189823 is a deficient number, since it is larger than the sum of its proper divisors (93694977).

122189823 is a wasteful number, since it uses less digits than its factorization.

122189823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28148 (or 28142 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 122189823 is about 11053.9505607724. The cubic root of 122189823 is about 496.2246627378.

The spelling of 122189823 in words is "one hundred twenty-two million, one hundred eighty-nine thousand, eight hundred twenty-three".