111222112919 has 2 divisors, whose sum is σ = 111222112920. Its totient is φ = 111222112918.

The previous prime is 111222112909. The next prime is 111222112921. The reversal of 111222112919 is 919211222111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222112919 is a prime.

It is a super-2 number, since 2×111222112919² (a number of 23 digits) contains 22 as substring.

Together with 111222112921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222112909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611056459 + 55611056460.

It is an arithmetic number, because the mean of its divisors is an integer number (55611056460).

Almost surely, 2^111222112919 is an apocalyptic number.

111222112919 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222112919 is an equidigital number, since it uses as much as digits as its factorization.

111222112919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 32.

The spelling of 111222112919 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, nine hundred nineteen".