2166334213 has 4 divisors (see below), whose sum is σ = 2187366688. Its totient is φ = 2145301740.

The previous prime is 2166334207. The next prime is 2166334217. The reversal of 2166334213 is 3124336612.

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 2166334213 - 2¹⁷ = 2166203141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166334217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10516083 + ... + 10516288.

It is an arithmetic number, because the mean of its divisors is an integer number (546841672).

Almost surely, 2^2166334213 is an apocalyptic number.

It is an amenable number.

2166334213 is a deficient number, since it is larger than the sum of its proper divisors (21032475).

2166334213 is a wasteful number, since it uses less digits than its factorization.

2166334213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032474.

The product of its digits is 15552, while the sum is 31.

The square root of 2166334213 is about 46543.8955503297. The cubic root of 2166334213 is about 1293.9231594159.

The spelling of 2166334213 in words is "two billion, one hundred sixty-six million, three hundred thirty-four thousand, two hundred thirteen".