2120799943 has 2 divisors, whose sum is σ = 2120799944. Its totient is φ = 2120799942.

The previous prime is 2120799887. The next prime is 2120799953. The reversal of 2120799943 is 3499970212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120799943 - 2²¹ = 2118702791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120799893 and 2120799902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120799953) 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, 1060399971 + 1060399972.

It is an arithmetic number, because the mean of its divisors is an integer number (1060399972).

Almost surely, 2^2120799943 is an apocalyptic number.

2120799943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120799943 is an equidigital number, since it uses as much as digits as its factorization.

2120799943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 2120799943 is about 46052.1437394612. The cubic root of 2120799943 is about 1284.7932147685.

The spelling of 2120799943 in words is "two billion, one hundred twenty million, seven hundred ninety-nine thousand, nine hundred forty-three".