111110031311021 has 8 divisors (see below), whose sum is σ = 111226332664800. Its totient is φ = 110993733812880.

The previous prime is 111110031311017. The next prime is 111110031311023. The reversal of 111110031311021 is 120113130011111.

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 111110031311021 - 2² = 111110031311017 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 (111110031311023) 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, 58627415 + ... + 60492923.

It is an arithmetic number, because the mean of its divisors is an integer number (13903291583100).

Almost surely, 2^{111110031311021} is an apocalyptic number.

It is an amenable number.

111110031311021 is a deficient number, since it is larger than the sum of its proper divisors (116301353779).

111110031311021 is an equidigital number, since it uses as much as digits as its factorization.

111110031311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927819.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 111110031311021 its reverse (120113130011111), we get a palindrome (231223161322132).

The spelling of 111110031311021 in words is "one hundred eleven trillion, one hundred ten billion, thirty-one million, three hundred eleven thousand, twenty-one".