2156922113 has 4 divisors (see below), whose sum is σ = 2170154928. Its totient is φ = 2143689300.

The previous prime is 2156922023. The next prime is 2156922121. The reversal of 2156922113 is 3112296512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2156922113 - 2²⁰ = 2155873537 is a prime.

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 2156922113.

It is not an unprimeable number, because it can be changed into a prime (2156922013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6616163 + ... + 6616488.

It is an arithmetic number, because the mean of its divisors is an integer number (542538732).

Almost surely, 2^2156922113 is an apocalyptic number.

It is an amenable number.

2156922113 is a deficient number, since it is larger than the sum of its proper divisors (13232815).

2156922113 is a wasteful number, since it uses less digits than its factorization.

2156922113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232814.

The product of its digits is 6480, while the sum is 32.

The square root of 2156922113 is about 46442.6755581545. The cubic root of 2156922113 is about 1292.0465308080.

The spelling of 2156922113 in words is "two billion, one hundred fifty-six million, nine hundred twenty-two thousand, one hundred thirteen".