111111444419 has 2 divisors, whose sum is σ = 111111444420. Its totient is φ = 111111444418.

The previous prime is 111111444359. The next prime is 111111444461. The reversal of 111111444419 is 914444111111.

It is a strong prime.

It is an emirp because it is prime and its reverse (914444111111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111111444419 - 2²⁰ = 111110395843 is a prime.

It is a super-2 number, since 2×111111444419² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111111444919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555722209 + 55555722210.

It is an arithmetic number, because the mean of its divisors is an integer number (55555722210).

Almost surely, 2^111111444419 is an apocalyptic number.

111111444419 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111444419 is an equidigital number, since it uses as much as digits as its factorization.

111111444419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 32.

The spelling of 111111444419 in words is "one hundred eleven billion, one hundred eleven million, four hundred forty-four thousand, four hundred nineteen".