2122844917 has 2 divisors, whose sum is σ = 2122844918. Its totient is φ = 2122844916.

The previous prime is 2122844909. The next prime is 2122844923. The reversal of 2122844917 is 7194482212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2002920516 + 119924401 = 44754^2 + 10951^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122844917 - 2³ = 2122844909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122844917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122844947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061422458 + 1061422459.

It is an arithmetic number, because the mean of its divisors is an integer number (1061422459).

Almost surely, 2^2122844917 is an apocalyptic number.

It is an amenable number.

2122844917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122844917 is an equidigital number, since it uses as much as digits as its factorization.

2122844917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 2122844917 is about 46074.3411998479. The cubic root of 2122844917 is about 1285.2060345795.

The spelling of 2122844917 in words is "two billion, one hundred twenty-two million, eight hundred forty-four thousand, nine hundred seventeen".