2122509917 has 8 divisors (see below), whose sum is σ = 2331007200. Its totient is φ = 1916602960.

The previous prime is 2122509911. The next prime is 2122509919. The reversal of 2122509917 is 7199052212.

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 2122509917 - 2⁸ = 2122509661 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 (2122509911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645863 + ... + 649140.

It is an arithmetic number, because the mean of its divisors is an integer number (291375900).

Almost surely, 2^2122509917 is an apocalyptic number.

It is an amenable number.

2122509917 is a deficient number, since it is larger than the sum of its proper divisors (208497283).

2122509917 is a wasteful number, since it uses less digits than its factorization.

2122509917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295163.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 2122509917 is about 46070.7056273290. The cubic root of 2122509917 is about 1285.1384261439.

The spelling of 2122509917 in words is "two billion, one hundred twenty-two million, five hundred nine thousand, nine hundred seventeen".