111511622113 has 8 divisors (see below), whose sum is σ = 112604943528. Its totient is φ = 110423149824.

The previous prime is 111511622099. The next prime is 111511622143. The reversal of 111511622113 is 311226115111.

It can be written as a sum of positive squares in 4 ways, for example, as 59649758289 + 51861863824 = 244233^2 + 227732^2 .

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 111511622113 - 2⁵ = 111511622081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111511622143) 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, 1166056 + ... + 1258057.

It is an arithmetic number, because the mean of its divisors is an integer number (14075617941).

Almost surely, 2^111511622113 is an apocalyptic number.

It is an amenable number.

111511622113 is a deficient number, since it is larger than the sum of its proper divisors (1093321415).

111511622113 is a wasteful number, since it uses less digits than its factorization.

111511622113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424563.

The product of its digits is 360, while the sum is 25.

Adding to 111511622113 its reverse (311226115111), we get a palindrome (422737737224).

The spelling of 111511622113 in words is "one hundred eleven billion, five hundred eleven million, six hundred twenty-two thousand, one hundred thirteen".