111420401311 has 4 divisors (see below), whose sum is σ = 111485983000. Its totient is φ = 111354819624.

The previous prime is 111420401249. The next prime is 111420401321. The reversal of 111420401311 is 113104024111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113104024111 = 13 ⋅8700309547.

It is a cyclic number.

It is not a de Polignac number, because 111420401311 - 2¹¹ = 111420399263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111420401321) 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, 32788296 + ... + 32791693.

It is an arithmetic number, because the mean of its divisors is an integer number (27871495750).

Almost surely, 2^111420401311 is an apocalyptic number.

111420401311 is a deficient number, since it is larger than the sum of its proper divisors (65581689).

111420401311 is an equidigital number, since it uses as much as digits as its factorization.

111420401311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65581688.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111420401311 its reverse (113104024111), we get a palindrome (224524425422).

The spelling of 111420401311 in words is "one hundred eleven billion, four hundred twenty million, four hundred one thousand, three hundred eleven".