11111100100019 has 2 divisors, whose sum is σ = 11111100100020. Its totient is φ = 11111100100018.

The previous prime is 11111100099943. The next prime is 11111100100043. The reversal of 11111100100019 is 91000100111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111100100019 - 2²⁸ = 11110831664563 is a prime.

It is a super-2 number, since 2×11111100100019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11111100100049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555550050009 + 5555550050010.

It is an arithmetic number, because the mean of its divisors is an integer number (5555550050010).

Almost surely, 2^{11111100100019} is an apocalyptic number.

11111100100019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111100100019 is an equidigital number, since it uses as much as digits as its factorization.

11111100100019 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 17.

The spelling of 11111100100019 in words is "eleven trillion, one hundred eleven billion, one hundred million, one hundred thousand, nineteen".