2121710279 has 32 divisors (see below), whose sum is σ = 2536095744. Its totient is φ = 1755072000.

The previous prime is 2121710263. The next prime is 2121710299. The reversal of 2121710279 is 9720171212.

It is a cyclic number.

It is not a de Polignac number, because 2121710279 - 2⁴ = 2121710263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121710299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275002 + ... + 1276664.

It is an arithmetic number, because the mean of its divisors is an integer number (79252992).

Almost surely, 2^2121710279 is an apocalyptic number.

2121710279 is a deficient number, since it is larger than the sum of its proper divisors (414385465).

2121710279 is a wasteful number, since it uses less digits than its factorization.

2121710279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 2121710279 is about 46062.0264317583. The cubic root of 2121710279 is about 1284.9770174595.

The spelling of 2121710279 in words is "two billion, one hundred twenty-one million, seven hundred ten thousand, two hundred seventy-nine".