111213331023 has 4 divisors (see below), whose sum is σ = 148284441368. Its totient is φ = 74142220680.

The previous prime is 111213331003. The next prime is 111213331027. The reversal of 111213331023 is 320133312111.

It is a happy number.

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

It is not a de Polignac number, because 111213331023 - 2⁶ = 111213330959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213331027) 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, 18535555168 + ... + 18535555173.

It is an arithmetic number, because the mean of its divisors is an integer number (37071110342).

Almost surely, 2^111213331023 is an apocalyptic number.

111213331023 is a deficient number, since it is larger than the sum of its proper divisors (37071110345).

111213331023 is an equidigital number, since it uses as much as digits as its factorization.

111213331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37071110344.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 111213331023 its reverse (320133312111), we get a palindrome (431346643134).

The spelling of 111213331023 in words is "one hundred eleven billion, two hundred thirteen million, three hundred thirty-one thousand, twenty-three".