11112112013 has 4 divisors (see below), whose sum is σ = 11114479488. Its totient is φ = 11109744540.

The previous prime is 11112112009. The next prime is 11112112069. The reversal of 11112112013 is 31021121111.

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 11112112013 - 2² = 11112112009 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 (11112112003) 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, 1176683 + ... + 1186088.

It is an arithmetic number, because the mean of its divisors is an integer number (2778619872).

Almost surely, 2^11112112013 is an apocalyptic number.

It is an amenable number.

11112112013 is a deficient number, since it is larger than the sum of its proper divisors (2367475).

11112112013 is an equidigital number, since it uses as much as digits as its factorization.

11112112013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367474.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11112112013 its reverse (31021121111), we get a palindrome (42133233124).

The spelling of 11112112013 in words is "eleven billion, one hundred twelve million, one hundred twelve thousand, thirteen".