2121325717 has 8 divisors (see below), whose sum is σ = 2458518912. Its totient is φ = 1792669200.

The previous prime is 2121325697. The next prime is 2121325721. The reversal of 2121325717 is 7175231212.

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

It is a de Polignac number, because none of the positive numbers 2^k-2121325717 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 (2121322717) 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, 2133634 + ... + 2134627.

It is an arithmetic number, because the mean of its divisors is an integer number (307314864).

Almost surely, 2^2121325717 is an apocalyptic number.

It is an amenable number.

2121325717 is a deficient number, since it is larger than the sum of its proper divisors (337193195).

2121325717 is an equidigital number, since it uses as much as digits as its factorization.

2121325717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268339.

The product of its digits is 5880, while the sum is 31.

The square root of 2121325717 is about 46057.8518496032. The cubic root of 2121325717 is about 1284.8993783343.

Adding to 2121325717 its reverse (7175231212), we get a palindrome (9296556929).

The spelling of 2121325717 in words is "two billion, one hundred twenty-one million, three hundred twenty-five thousand, seven hundred seventeen".