111223212013 has 4 divisors (see below), whose sum is σ = 111959789728. Its totient is φ = 110486634300.

The previous prime is 111223212007. The next prime is 111223212041. The reversal of 111223212013 is 310212322111.

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 a cyclic number.

It is not a de Polignac number, because 111223212013 - 2¹³ = 111223203821 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 (111223212613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368288631 + ... + 368288932.

It is an arithmetic number, because the mean of its divisors is an integer number (27989947432).

Almost surely, 2^111223212013 is an apocalyptic number.

It is an amenable number.

111223212013 is a deficient number, since it is larger than the sum of its proper divisors (736577715).

111223212013 is an equidigital number, since it uses as much as digits as its factorization.

111223212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736577714.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111223212013 its reverse (310212322111), we get a palindrome (421435534124).

The spelling of 111223212013 in words is "one hundred eleven billion, two hundred twenty-three million, two hundred twelve thousand, thirteen".