11111121111113 has 8 divisors (see below), whose sum is σ = 11130971090400. Its totient is φ = 11091287215008.

The previous prime is 11111121111061. The next prime is 11111121111121. The reversal of 11111121111113 is 31111112111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111121111113 - 2⁸ = 11111121110857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111121111091 and 11111121111100.

It is not an unprimeable number, because it can be changed into a prime (11111121111133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2637431 + ... + 5401692.

It is an arithmetic number, because the mean of its divisors is an integer number (1391371386300).

Almost surely, 2^{11111121111113} is an apocalyptic number.

It is an amenable number.

11111121111113 is a deficient number, since it is larger than the sum of its proper divisors (19849979287).

11111121111113 is an equidigital number, since it uses as much as digits as its factorization.

11111121111113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041591.

The product of its digits is 6, while the sum is 17.

Adding to 11111121111113 its reverse (31111112111111), we get a palindrome (42222233222224).

It can be divided in two parts, 1111112111111 and 3, that multiplied together give a palindrome (3333336333333).

The spelling of 11111121111113 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-one million, one hundred eleven thousand, one hundred thirteen".