2166455222 has 4 divisors (see below), whose sum is σ = 3249682836. Its totient is φ = 1083227610.

The previous prime is 2166455219. The next prime is 2166455227. The reversal of 2166455222 is 2225546612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166455227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541613804 + ... + 541613807.

It is an arithmetic number, because the mean of its divisors is an integer number (812420709).

Almost surely, 2^2166455222 is an apocalyptic number.

2166455222 is a deficient number, since it is larger than the sum of its proper divisors (1083227614).

2166455222 is a wasteful number, since it uses less digits than its factorization.

2166455222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083227613.

The product of its digits is 57600, while the sum is 35.

The square root of 2166455222 is about 46545.1954770844. The cubic root of 2166455222 is about 1293.9472513329.

The spelling of 2166455222 in words is "two billion, one hundred sixty-six million, four hundred fifty-five thousand, two hundred twenty-two".