2712107921 has 4 divisors (see below), whose sum is σ = 2737454832. Its totient is φ = 2686761012.

The previous prime is 2712107897. The next prime is 2712107933. The reversal of 2712107921 is 1297012172.

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 not a de Polignac number, because 2712107921 - 2¹⁸ = 2711845777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2712100921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12673295 + ... + 12673508.

It is an arithmetic number, because the mean of its divisors is an integer number (684363708).

Almost surely, 2^2712107921 is an apocalyptic number.

It is an amenable number.

2712107921 is a deficient number, since it is larger than the sum of its proper divisors (25346911).

2712107921 is a wasteful number, since it uses less digits than its factorization.

2712107921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25346910.

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

The square root of 2712107921 is about 52077.9024251169. The cubic root of 2712107921 is about 1394.5550275487. Note that the first 3 decimals are identical.

The spelling of 2712107921 in words is "two billion, seven hundred twelve million, one hundred seven thousand, nine hundred twenty-one".