111223140 has 72 divisors (see below), whose sum is σ = 362279232. Its totient is φ = 25421760.

The previous prime is 111223121. The next prime is 111223153. The reversal of 111223140 is 41322111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15976 + ... + 21855.

It is an arithmetic number, because the mean of its divisors is an integer number (5031656).

Almost surely, 2^111223140 is an apocalyptic number.

111223140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111223140 is an abundant number, since it is smaller than the sum of its proper divisors (251056092).

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

111223140 is a wasteful number, since it uses less digits than its factorization.

111223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37857 (or 37848 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111223140 is about 10546.2381918862. The cubic root of 111223140 is about 480.9113761137.

Adding to 111223140 its reverse (41322111), we get a palindrome (152545251).

The spelling of 111223140 in words is "one hundred eleven million, two hundred twenty-three thousand, one hundred forty".