2123355043 has 2 divisors, whose sum is σ = 2123355044. Its totient is φ = 2123355042.

The previous prime is 2123355041. The next prime is 2123355079. The reversal of 2123355043 is 3405533212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123355043 - 2¹ = 2123355041 is a prime.

Together with 2123355041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2123355041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061677521 + 1061677522.

It is an arithmetic number, because the mean of its divisors is an integer number (1061677522).

Almost surely, 2^2123355043 is an apocalyptic number.

2123355043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123355043 is an equidigital number, since it uses as much as digits as its factorization.

2123355043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 2123355043 is about 46079.8767684984. The cubic root of 2123355043 is about 1285.3089726226.

Adding to 2123355043 its reverse (3405533212), we get a palindrome (5528888255).

The spelling of 2123355043 in words is "two billion, one hundred twenty-three million, three hundred fifty-five thousand, forty-three".