122125377921 has 8 divisors (see below), whose sum is σ = 163434701184. Its totient is φ = 81116486640.

The previous prime is 122125377859. The next prime is 122125377931. The reversal of 122125377921 is 129773521221.

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

It is not a de Polignac number, because 122125377921 - 2²⁶ = 122058269057 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (122125377931) 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 7 ways as a sum of consecutive naturals, for example, 75107046 + ... + 75108671.

It is an arithmetic number, because the mean of its divisors is an integer number (20429337648).

Almost surely, 2^122125377921 is an apocalyptic number.

It is an amenable number.

122125377921 is a deficient number, since it is larger than the sum of its proper divisors (41309323263).

122125377921 is a wasteful number, since it uses less digits than its factorization.

122125377921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150215991.

The product of its digits is 105840, while the sum is 42.

The spelling of 122125377921 in words is "one hundred twenty-two billion, one hundred twenty-five million, three hundred seventy-seven thousand, nine hundred twenty-one".