122400812 has 12 divisors (see below), whose sum is σ = 225475320. Its totient is φ = 57979296.

The previous prime is 122400791. The next prime is 122400823. The reversal of 122400812 is 218004221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805193 + ... + 805344.

It is an arithmetic number, because the mean of its divisors is an integer number (18789610).

Almost surely, 2^122400812 is an apocalyptic number.

It is an amenable number.

122400812 is a deficient number, since it is larger than the sum of its proper divisors (103074508).

122400812 is a wasteful number, since it uses less digits than its factorization.

122400812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610560 (or 1610558 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 122400812 is about 11063.4900460931. The cubic root of 122400812 is about 496.5101140648.

The spelling of 122400812 in words is "one hundred twenty-two million, four hundred thousand, eight hundred twelve".