111220334231 has 4 divisors (see below), whose sum is σ = 115055518200. Its totient is φ = 107385150264.

The previous prime is 111220334207. The next prime is 111220334317. The reversal of 111220334231 is 132433022111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111220334231 - 2¹⁸ = 111220072087 is a prime.

It is a super-3 number, since 3×111220334231³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220334197 and 111220334206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220324231) 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, 1917591941 + ... + 1917591998.

It is an arithmetic number, because the mean of its divisors is an integer number (28763879550).

Almost surely, 2^111220334231 is an apocalyptic number.

111220334231 is a deficient number, since it is larger than the sum of its proper divisors (3835183969).

111220334231 is an equidigital number, since it uses as much as digits as its factorization.

111220334231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835183968.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 111220334231 its reverse (132433022111), we get a palindrome (243653356342).

The spelling of 111220334231 in words is "one hundred eleven billion, two hundred twenty million, three hundred thirty-four thousand, two hundred thirty-one".