2191418240922 has 12 divisors (see below), whose sum is σ = 4748072855370. Its totient is φ = 730472746968.

The previous prime is 2191418240917. The next prime is 2191418240927. The reversal of 2191418240922 is 2290428141912.

2191418240922 is a `hidden beast` number, since 2 + 1 + 9 + 141 + 82 + 409 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (2191418240917) and next prime (2191418240927).

It can be written as a sum of positive squares in only one way, i.e., 1118223766521 + 1073194474401 = 1057461^2 + 1035951^2 .

It is not an unprimeable number, because it can be changed into a prime (2191418240927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60872728897 + ... + 60872728932.

Almost surely, 2^{2191418240922} is an apocalyptic number.

2191418240922 is an abundant number, since it is smaller than the sum of its proper divisors (2556654614448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2191418240922 is a wasteful number, since it uses less digits than its factorization.

2191418240922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121745457837 (or 121745457834 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 2191418240922 in words is "two trillion, one hundred ninety-one billion, four hundred eighteen million, two hundred forty thousand, nine hundred twenty-two".