111012516401 has 4 divisors (see below), whose sum is σ = 111020540400. Its totient is φ = 111004492404.

The previous prime is 111012516379. The next prime is 111012516409. The reversal of 111012516401 is 104615210111.

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 a cyclic number.

It is not a de Polignac number, because 111012516401 - 2³⁰ = 109938774577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111012516409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3991211 + ... + 4018928.

It is an arithmetic number, because the mean of its divisors is an integer number (27755135100).

Almost surely, 2^111012516401 is an apocalyptic number.

It is an amenable number.

111012516401 is a deficient number, since it is larger than the sum of its proper divisors (8023999).

111012516401 is an equidigital number, since it uses as much as digits as its factorization.

111012516401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023998.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 111012516401 its reverse (104615210111), we get a palindrome (215627726512).

The spelling of 111012516401 in words is "one hundred eleven billion, twelve million, five hundred sixteen thousand, four hundred one".