111423322021 has 32 divisors (see below), whose sum is σ = 127130129280. Its totient is φ = 97579278720.

The previous prime is 111423322001. The next prime is 111423322067. The reversal of 111423322021 is 120223324111.

It is not a de Polignac number, because 111423322021 - 2²⁷ = 111289104293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111423321983 and 111423322001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111423322001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4164675 + ... + 4191343.

It is an arithmetic number, because the mean of its divisors is an integer number (3972816540).

Almost surely, 2^111423322021 is an apocalyptic number.

111423322021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111423322021 is a deficient number, since it is larger than the sum of its proper divisors (15706807259).

111423322021 is an equidigital number, since it uses as much as digits as its factorization.

111423322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26818 (or 26796 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 111423322021 its reverse (120223324111), we get a palindrome (231646646132).

The spelling of 111423322021 in words is "one hundred eleven billion, four hundred twenty-three million, three hundred twenty-two thousand, twenty-one".