111213112233 has 4 divisors (see below), whose sum is σ = 148284149648. Its totient is φ = 74142074820.

The previous prime is 111213112229. The next prime is 111213112247. The reversal of 111213112233 is 332211312111.

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 111213112233 - 2² = 111213112229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111213112733) 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, 18535518703 + ... + 18535518708.

It is an arithmetic number, because the mean of its divisors is an integer number (37071037412).

Almost surely, 2^111213112233 is an apocalyptic number.

It is an amenable number.

111213112233 is a deficient number, since it is larger than the sum of its proper divisors (37071037415).

111213112233 is an equidigital number, since it uses as much as digits as its factorization.

111213112233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37071037414.

The product of its digits is 216, while the sum is 21.

Adding to 111213112233 its reverse (332211312111), we get a palindrome (443424424344).

It can be divided in two parts, 111213 and 112233, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 111213112233 in words is "one hundred eleven billion, two hundred thirteen million, one hundred twelve thousand, two hundred thirty-three".