111312022230 has 64 divisors (see below), whose sum is σ = 299771064000. Its totient is φ = 29389305600.

The previous prime is 111312022229. The next prime is 111312022247. The reversal of 111312022230 is 32220213111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2013655 + ... + 2068194.

It is an arithmetic number, because the mean of its divisors is an integer number (4683922875).

Almost surely, 2^111312022230 is an apocalyptic number.

111312022230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111312022230 is an abundant number, since it is smaller than the sum of its proper divisors (188459041770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111312022230 is a wasteful number, since it uses less digits than its factorization.

111312022230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081966 (or 4081960 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111312022230 its reverse (32220213111), we get a palindrome (143532235341).

The spelling of 111312022230 in words is "one hundred eleven billion, three hundred twelve million, twenty-two thousand, two hundred thirty".