2121158 has 16 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 921216.

The previous prime is 2121143. The next prime is 2121167. The reversal of 2121158 is 8511212.

It is a happy number.

It is a super-2 number, since 2×2121158² = 8998622521928, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1958 + ... + 2841.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

2^2121158 is an apocalyptic number.

2121158 is a deficient number, since it is larger than the sum of its proper divisors (1507642).

2121158 is a wasteful number, since it uses less digits than its factorization.

2121158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831.

The product of its digits is 160, while the sum is 20.

The square root of 2121158 is about 1456.4195824006. The cubic root of 2121158 is about 128.4865515053.

The spelling of 2121158 in words is "two million, one hundred twenty-one thousand, one hundred fifty-eight".