111400001 has 4 divisors (see below), whose sum is σ = 111960000. Its totient is φ = 110840004.

The previous prime is 111399989. The next prime is 111400013. The reversal of 111400001 is 100004111.

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: 100004111 = 43 ⋅2325677.

It is an interprime number because it is at equal distance from previous prime (111399989) and next prime (111400013).

It is a cyclic number.

It is not a de Polignac number, because 111400001 - 2¹⁴ = 111383617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111400801) 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, 279701 + ... + 280098.

It is an arithmetic number, because the mean of its divisors is an integer number (27990000).

Almost surely, 2^111400001 is an apocalyptic number.

It is an amenable number.

111400001 is a deficient number, since it is larger than the sum of its proper divisors (559999).

111400001 is an equidigital number, since it uses as much as digits as its factorization.

111400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559998.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 111400001 is about 10554.6198889396. The cubic root of 111400001 is about 481.1661475089.

Adding to 111400001 its reverse (100004111), we get a palindrome (211404112).

The spelling of 111400001 in words is "one hundred eleven million, four hundred thousand, one".