2121323986 has 16 divisors (see below), whose sum is σ = 3289547520. Its totient is φ = 1024910640.

The previous prime is 2121323933. The next prime is 2121324001. The reversal of 2121323986 is 6893231212.

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, 16705 + ... + 67243.

It is an arithmetic number, because the mean of its divisors is an integer number (205596720).

Almost surely, 2^2121323986 is an apocalyptic number.

2121323986 is a deficient number, since it is larger than the sum of its proper divisors (1168223534).

2121323986 is a wasteful number, since it uses less digits than its factorization.

2121323986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51249.

The product of its digits is 31104, while the sum is 37.

The square root of 2121323986 is about 46057.8330580152. The cubic root of 2121323986 is about 1284.8990288419.

The spelling of 2121323986 in words is "two billion, one hundred twenty-one million, three hundred twenty-three thousand, nine hundred eighty-six".