111109999997 has 4 divisors (see below), whose sum is σ = 111143683200. Its totient is φ = 111076316796.

The previous prime is 111109999969. The next prime is 111110000011. The reversal of 111109999997 is 799999901111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799999901111 = 71 ⋅11267604241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111109999997 is a prime.

It is a super-3 number, since 3×111109999997³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111109993997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16836653 + ... + 16843250.

It is an arithmetic number, because the mean of its divisors is an integer number (27785920800).

Almost surely, 2^111109999997 is an apocalyptic number.

It is an amenable number.

111109999997 is a deficient number, since it is larger than the sum of its proper divisors (33683203).

111109999997 is an equidigital number, since it uses as much as digits as its factorization.

111109999997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33683202.

The product of its (nonzero) digits is 3720087, while the sum is 65.

The spelling of 111109999997 in words is "one hundred eleven billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-seven".