111033316561 has 8 divisors (see below), whose sum is σ = 113579008704. Its totient is φ = 108504318000.

The previous prime is 111033316447. The next prime is 111033316609. The reversal of 111033316561 is 165613330111.

It is a happy number.

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 111033316561 - 2²⁵ = 110999762129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111033316861) 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, 4159941 + ... + 4186546.

It is an arithmetic number, because the mean of its divisors is an integer number (14197376088).

Almost surely, 2^111033316561 is an apocalyptic number.

It is an amenable number.

111033316561 is a deficient number, since it is larger than the sum of its proper divisors (2545692143).

111033316561 is an equidigital number, since it uses as much as digits as its factorization.

111033316561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346791.

The product of its (nonzero) digits is 4860, while the sum is 31.

Adding to 111033316561 its reverse (165613330111), we get a palindrome (276646646672).

The spelling of 111033316561 in words is "one hundred eleven billion, thirty-three million, three hundred sixteen thousand, five hundred sixty-one".