2122973917 has 4 divisors (see below), whose sum is σ = 2148552000. Its totient is φ = 2097395836.

The previous prime is 2122973861. The next prime is 2122973921. The reversal of 2122973917 is 7193792212.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122973917 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 (2122973717) 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, 12788917 + ... + 12789082.

It is an arithmetic number, because the mean of its divisors is an integer number (537138000).

Almost surely, 2^2122973917 is an apocalyptic number.

It is an amenable number.

2122973917 is a deficient number, since it is larger than the sum of its proper divisors (25578083).

2122973917 is an equidigital number, since it uses as much as digits as its factorization.

2122973917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25578082.

The product of its digits is 95256, while the sum is 43.

The square root of 2122973917 is about 46075.7410900791. The cubic root of 2122973917 is about 1285.2320669758.

The spelling of 2122973917 in words is "two billion, one hundred twenty-two million, nine hundred seventy-three thousand, nine hundred seventeen".