2121112043 has 2 divisors, whose sum is σ = 2121112044. Its totient is φ = 2121112042.

The previous prime is 2121112027. The next prime is 2121112051. The reversal of 2121112043 is 3402111212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121112043 - 2⁴ = 2121112027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2121112013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060556021 + 1060556022.

It is an arithmetic number, because the mean of its divisors is an integer number (1060556022).

Almost surely, 2^2121112043 is an apocalyptic number.

2121112043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121112043 is an equidigital number, since it uses as much as digits as its factorization.

2121112043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2121112043 is about 46055.5321649853. The cubic root of 2121112043 is about 1284.8562356891.

Adding to 2121112043 its reverse (3402111212), we get a palindrome (5523223255).

The spelling of 2121112043 in words is "two billion, one hundred twenty-one million, one hundred twelve thousand, forty-three".