111888001 has 4 divisors (see below), whose sum is σ = 112183600. Its totient is φ = 111592404.

The previous prime is 111887989. The next prime is 111888043. The reversal of 111888001 is 100888111.

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: 100888111 = 109 ⋅925579.

It is a cyclic number.

It is not a de Polignac number, because 111888001 - 2⁷ = 111887873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111888071) 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, 147231 + ... + 147988.

It is an arithmetic number, because the mean of its divisors is an integer number (28045900).

Almost surely, 2^111888001 is an apocalyptic number.

It is an amenable number.

111888001 is a deficient number, since it is larger than the sum of its proper divisors (295599).

111888001 is an equidigital number, since it uses as much as digits as its factorization.

111888001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295598.

The product of its (nonzero) digits is 512, while the sum is 28.

The square root of 111888001 is about 10577.7124653679. The cubic root of 111888001 is about 481.8677245312.

The spelling of 111888001 in words is "one hundred eleven million, eight hundred eighty-eight thousand, one".