111000100019 has 2 divisors, whose sum is σ = 111000100020. Its totient is φ = 111000100018.

The previous prime is 111000099979. The next prime is 111000100027. The reversal of 111000100019 is 910001000111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111000100019 is a prime.

It is a super-2 number, since 2×111000100019² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 111000099976 and 111000100012.

It is not a weakly prime, because it can be changed into another prime (111000100619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500050009 + 55500050010.

It is an arithmetic number, because the mean of its divisors is an integer number (55500050010).

Almost surely, 2^111000100019 is an apocalyptic number.

111000100019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000100019 is an equidigital number, since it uses as much as digits as its factorization.

111000100019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

The spelling of 111000100019 in words is "one hundred eleven billion, one hundred thousand, nineteen".