111243132013 has 16 divisors (see below), whose sum is σ = 120635020800. Its totient is φ = 101971691136.

The previous prime is 111243131963. The next prime is 111243132023. The reversal of 111243132013 is 310231342111.

It is a cyclic number.

It is not a de Polignac number, because 111243132013 - 2⁹ = 111243131501 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 (111243132023) 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 15 ways as a sum of consecutive naturals, for example, 2252956 + ... + 2301802.

It is an arithmetic number, because the mean of its divisors is an integer number (7539688800).

Almost surely, 2^111243132013 is an apocalyptic number.

111243132013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111243132013 is a deficient number, since it is larger than the sum of its proper divisors (9391888787).

111243132013 is a wasteful number, since it uses less digits than its factorization.

111243132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50076.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 111243132013 its reverse (310231342111), we get a palindrome (421474474124).

The spelling of 111243132013 in words is "one hundred eleven billion, two hundred forty-three million, one hundred thirty-two thousand, thirteen".