111001120231 has 4 divisors (see below), whose sum is σ = 111002911272. Its totient is φ = 110999329192.

The previous prime is 111001120183. The next prime is 111001120253. The reversal of 111001120231 is 132021100111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132021100111 = 2383 ⋅55401217.

It is a cyclic number.

It is not a de Polignac number, because 111001120231 - 2¹¹ = 111001118183 is a prime.

It is a super-2 number, since 2×111001120231² (a number of 23 digits) contains 22 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 (111001126231) 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, 799096 + ... + 927661.

It is an arithmetic number, because the mean of its divisors is an integer number (27750727818).

Almost surely, 2^111001120231 is an apocalyptic number.

111001120231 is a deficient number, since it is larger than the sum of its proper divisors (1791041).

111001120231 is an equidigital number, since it uses as much as digits as its factorization.

111001120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791040.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111001120231 its reverse (132021100111), we get a palindrome (243022220342).

The spelling of 111001120231 in words is "one hundred eleven billion, one million, one hundred twenty thousand, two hundred thirty-one".