2109167021 has 8 divisors (see below), whose sum is σ = 2279440800. Its totient is φ = 1940040432.

The previous prime is 2109166993. The next prime is 2109167051. The reversal of 2109167021 is 1207619012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2109167021 - 2¹⁸ = 2108904877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109167051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282971 + ... + 290328.

It is an arithmetic number, because the mean of its divisors is an integer number (284930100).

Almost surely, 2^2109167021 is an apocalyptic number.

It is an amenable number.

2109167021 is a deficient number, since it is larger than the sum of its proper divisors (170273779).

2109167021 is a wasteful number, since it uses less digits than its factorization.

2109167021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573595.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 2109167021 is about 45925.6684328056. The cubic root of 2109167021 is about 1282.4398088044.

The spelling of 2109167021 in words is "two billion, one hundred nine million, one hundred sixty-seven thousand, twenty-one".