121550875 has 8 divisors (see below), whose sum is σ = 151695648. Its totient is φ = 97240600.

The previous prime is 121550831. The next prime is 121550917. The reversal of 121550875 is 578055121.

It is not a de Polignac number, because 121550875 - 2¹⁵ = 121518107 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121550875.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486079 + ... + 486328.

It is an arithmetic number, because the mean of its divisors is an integer number (18961956).

Almost surely, 2^121550875 is an apocalyptic number.

121550875 is a deficient number, since it is larger than the sum of its proper divisors (30144773).

121550875 is an frugal number, since it uses more digits than its factorization.

121550875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972422 (or 972412 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 121550875 is about 11025.0113378627. The cubic root of 121550875 is about 495.3582075431.

The spelling of 121550875 in words is "one hundred twenty-one million, five hundred fifty thousand, eight hundred seventy-five".