111213120233 has 4 divisors (see below), whose sum is σ = 117755068500. Its totient is φ = 104671171968.

The previous prime is 111213120229. The next prime is 111213120281. The reversal of 111213120233 is 332021312111.

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: 332021312111 = 15859 ⋅20935829.

It can be written as a sum of positive squares in 2 ways, for example, as 53318504464 + 57894615769 = 230908^2 + 240613^2 .

It is a cyclic number.

It is not a de Polignac number, because 111213120233 - 2² = 111213120229 is a prime.

It is a super-2 number, since 2×111213120233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111213120433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270974108 + ... + 3270974141.

It is an arithmetic number, because the mean of its divisors is an integer number (29438767125).

Almost surely, 2^111213120233 is an apocalyptic number.

It is an amenable number.

111213120233 is a deficient number, since it is larger than the sum of its proper divisors (6541948267).

111213120233 is an equidigital number, since it uses as much as digits as its factorization.

111213120233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541948266.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111213120233 its reverse (332021312111), we get a palindrome (443234432344).

The spelling of 111213120233 in words is "one hundred eleven billion, two hundred thirteen million, one hundred twenty thousand, two hundred thirty-three".