121158166 has 8 divisors (see below), whose sum is σ = 182826000. Its totient is φ = 60216168.

The previous prime is 121158131. The next prime is 121158197. The reversal of 121158166 is 661851121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181041 + ... + 181708.

It is an arithmetic number, because the mean of its divisors is an integer number (22853250).

Almost surely, 2^121158166 is an apocalyptic number.

121158166 is a deficient number, since it is larger than the sum of its proper divisors (61667834).

121158166 is a wasteful number, since it uses less digits than its factorization.

121158166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362918.

The product of its digits is 2880, while the sum is 31.

The square root of 121158166 is about 11007.1870157638. The cubic root of 121158166 is about 494.8241609226.

The spelling of 121158166 in words is "one hundred twenty-one million, one hundred fifty-eight thousand, one hundred sixty-six".