121375851 has 8 divisors (see below), whose sum is σ = 162602304. Its totient is φ = 80533320.

The previous prime is 121375843. The next prime is 121375861. The reversal of 121375851 is 158573121.

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

It is not a de Polignac number, because 121375851 - 2³ = 121375843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121375811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95241 + ... + 96506.

It is an arithmetic number, because the mean of its divisors is an integer number (20325288).

Almost surely, 2^121375851 is an apocalyptic number.

121375851 is a deficient number, since it is larger than the sum of its proper divisors (41226453).

121375851 is a wasteful number, since it uses less digits than its factorization.

121375851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191961.

The product of its digits is 8400, while the sum is 33.

The square root of 121375851 is about 11017.0708902140. The cubic root of 121375851 is about 495.1203339728.

The spelling of 121375851 in words is "one hundred twenty-one million, three hundred seventy-five thousand, eight hundred fifty-one".