1712120094721 has 4 divisors (see below), whose sum is σ = 1715129093700. Its totient is φ = 1709111095744.

The previous prime is 1712120094697. The next prime is 1712120094791. The reversal of 1712120094721 is 1274900212171.

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

It can be written as a sum of positive squares in 2 ways, for example, as 961401821121 + 750718273600 = 980511^2 + 866440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1712120094721 - 2³⁷ = 1574681141249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1712120094791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504498636 + ... + 1504499773.

It is an arithmetic number, because the mean of its divisors is an integer number (428782273425).

Almost surely, 2^{1712120094721} is an apocalyptic number.

It is an amenable number.

1712120094721 is a deficient number, since it is larger than the sum of its proper divisors (3008998979).

1712120094721 is an equidigital number, since it uses as much as digits as its factorization.

1712120094721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008998978.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 1712120094721 in words is "one trillion, seven hundred twelve billion, one hundred twenty million, ninety-four thousand, seven hundred twenty-one".