11123223919 has 2 divisors, whose sum is σ = 11123223920. Its totient is φ = 11123223918.

The previous prime is 11123223907. The next prime is 11123223929. The reversal of 11123223919 is 91932232111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11123223919 - 2⁵ = 11123223887 is a prime.

It is a super-2 number, since 2×11123223919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123223929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561611959 + 5561611960.

It is an arithmetic number, because the mean of its divisors is an integer number (5561611960).

Almost surely, 2^11123223919 is an apocalyptic number.

11123223919 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123223919 is an equidigital number, since it uses as much as digits as its factorization.

11123223919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The spelling of 11123223919 in words is "eleven billion, one hundred twenty-three million, two hundred twenty-three thousand, nine hundred nineteen".