2112400291 has 2 divisors, whose sum is σ = 2112400292. Its totient is φ = 2112400290.

The previous prime is 2112400273. The next prime is 2112400333. The reversal of 2112400291 is 1920042112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112400291 - 2¹⁷ = 2112269219 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112400211) 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 as a sum of consecutive naturals, namely, 1056200145 + 1056200146.

It is an arithmetic number, because the mean of its divisors is an integer number (1056200146).

Almost surely, 2^2112400291 is an apocalyptic number.

2112400291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112400291 is an equidigital number, since it uses as much as digits as its factorization.

2112400291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2112400291 is about 45960.8560734023. The cubic root of 2112400291 is about 1283.0947841459.

The spelling of 2112400291 in words is "two billion, one hundred twelve million, four hundred thousand, two hundred ninety-one".