1111111111113 has 4 divisors (see below), whose sum is σ = 1481481481488. Its totient is φ = 740740740740.

The previous prime is 1111111111093. The next prime is 1111111111139. The reversal of 1111111111113 is 3111111111111.

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 1111111111113 - 2⁶ = 1111111111049 is a prime.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 1111111111092 and 1111111111101.

It is not an unprimeable number, because it can be changed into a prime (1111111111153) 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, 185185185183 + ... + 185185185188.

It is an arithmetic number, because the mean of its divisors is an integer number (370370370372).

Almost surely, 2^{1111111111113} is an apocalyptic number.

It is an amenable number.

1111111111113 is a deficient number, since it is larger than the sum of its proper divisors (370370370375).

1111111111113 is an equidigital number, since it uses as much as digits as its factorization.

1111111111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370370370374.

The product of its digits is 3, while the sum is 15.

Adding to 1111111111113 its reverse (3111111111111), we get a palindrome (4222222222224).

It can be divided in two parts, 111111111111 and 3, that multiplied together give a palindrome (333333333333).

The spelling of 1111111111113 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred thirteen".