111231201 has 4 divisors (see below), whose sum is σ = 148308272. Its totient is φ = 74154132.

The previous prime is 111231191. The next prime is 111231209. The reversal of 111231201 is 102132111.

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.

It is not a de Polignac number, because 111231201 - 2¹⁹ = 110706913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111231209) 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, 18538531 + ... + 18538536.

It is an arithmetic number, because the mean of its divisors is an integer number (37077068).

Almost surely, 2^111231201 is an apocalyptic number.

It is an amenable number.

111231201 is a deficient number, since it is larger than the sum of its proper divisors (37077071).

111231201 is an equidigital number, since it uses as much as digits as its factorization.

111231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37077070.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111231201 is about 10546.6203591482. The cubic root of 111231201 is about 480.9229939987.

Adding to 111231201 its reverse (102132111), we get a palindrome (213363312).

The spelling of 111231201 in words is "one hundred eleven million, two hundred thirty-one thousand, two hundred one".