111310465521 has 4 divisors (see below), whose sum is σ = 148413954032. Its totient is φ = 74206977012.

The previous prime is 111310465501. The next prime is 111310465537. The reversal of 111310465521 is 125564013111.

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 not a de Polignac number, because 111310465521 - 2¹⁰ = 111310464497 is a prime.

It is a super-5 number, since 5×111310465521⁵ (a number of 56 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111310465501) 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 3 ways as a sum of consecutive naturals, for example, 18551744251 + ... + 18551744256.

It is an arithmetic number, because the mean of its divisors is an integer number (37103488508).

Almost surely, 2^111310465521 is an apocalyptic number.

It is an amenable number.

111310465521 is a deficient number, since it is larger than the sum of its proper divisors (37103488511).

111310465521 is an equidigital number, since it uses as much as digits as its factorization.

111310465521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37103488510.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 111310465521 its reverse (125564013111), we get a palindrome (236874478632).

The spelling of 111310465521 in words is "one hundred eleven billion, three hundred ten million, four hundred sixty-five thousand, five hundred twenty-one".