120917021275 has 24 divisors (see below), whose sum is σ = 150306786000. Its totient is φ = 96495436800.

The previous prime is 120917021261. The next prime is 120917021297. The reversal of 120917021275 is 572120719021.

It is a happy number.

It is not a de Polignac number, because 120917021275 - 2²³ = 120908632667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19193076 + ... + 19199374.

It is an arithmetic number, because the mean of its divisors is an integer number (6262782750).

Almost surely, 2^120917021275 is an apocalyptic number.

120917021275 is a deficient number, since it is larger than the sum of its proper divisors (29389764725).

120917021275 is a wasteful number, since it uses less digits than its factorization.

120917021275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079 (or 8074 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 120917021275 in words is "one hundred twenty billion, nine hundred seventeen million, twenty-one thousand, two hundred seventy-five".