11123211943 has 2 divisors, whose sum is σ = 11123211944. Its totient is φ = 11123211942.

The previous prime is 11123211941. The next prime is 11123211949. The reversal of 11123211943 is 34911232111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11123211943 - 2¹ = 11123211941 is a prime.

Together with 11123211941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123211941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561605971 + 5561605972.

It is an arithmetic number, because the mean of its divisors is an integer number (5561605972).

Almost surely, 2^11123211943 is an apocalyptic number.

11123211943 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123211943 is an equidigital number, since it uses as much as digits as its factorization.

11123211943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 28.

The spelling of 11123211943 in words is "eleven billion, one hundred twenty-three million, two hundred eleven thousand, nine hundred forty-three".