111311121013 has 8 divisors (see below), whose sum is σ = 115004155136. Its totient is φ = 107624484000.

The previous prime is 111311120959. The next prime is 111311121023. The reversal of 111311121013 is 310121113111.

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 111311121013 - 2¹⁷ = 111310989941 is a prime.

It is a super-2 number, since 2×111311121013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563888 + ... + 1633513.

It is an arithmetic number, because the mean of its divisors is an integer number (14375519392).

Almost surely, 2^111311121013 is an apocalyptic number.

It is an amenable number.

111311121013 is a deficient number, since it is larger than the sum of its proper divisors (3693034123).

111311121013 is a wasteful number, since it uses less digits than its factorization.

111311121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198555.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 111311121013 its reverse (310121113111), we get a palindrome (421432234124).

It can be divided in two parts, 111311 and 121013, that added together give a square (232324 = 482²).

The spelling of 111311121013 in words is "one hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, thirteen".