2120440291 has 2 divisors, whose sum is σ = 2120440292. Its totient is φ = 2120440290.

The previous prime is 2120440253. The next prime is 2120440327. The reversal of 2120440291 is 1920440212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120440291 - 2⁷ = 2120440163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120440891) 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, 1060220145 + 1060220146.

It is an arithmetic number, because the mean of its divisors is an integer number (1060220146).

Almost surely, 2^2120440291 is an apocalyptic number.

2120440291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120440291 is an equidigital number, since it uses as much as digits as its factorization.

2120440291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2120440291 is about 46048.2387393915. The cubic root of 2120440291 is about 1284.7205842228.

The spelling of 2120440291 in words is "two billion, one hundred twenty million, four hundred forty thousand, two hundred ninety-one".