111223146 has 16 divisors (see below), whose sum is σ = 235531584. Its totient is φ = 34893504.

The previous prime is 111223121. The next prime is 111223153. The reversal of 111223146 is 641322111.

It is a super-2 number, since 2×111223146² = 24741176412274632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545110 + ... + 545313.

It is an arithmetic number, because the mean of its divisors is an integer number (14720724).

Almost surely, 2^111223146 is an apocalyptic number.

111223146 is an abundant number, since it is smaller than the sum of its proper divisors (124308438).

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

111223146 is a wasteful number, since it uses less digits than its factorization.

111223146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090445.

The product of its digits is 288, while the sum is 21.

The square root of 111223146 is about 10546.2384763479. The cubic root of 111223146 is about 480.9113847613.

Adding to 111223146 its reverse (641322111), we get a palindrome (752545257).

The spelling of 111223146 in words is "one hundred eleven million, two hundred twenty-three thousand, one hundred forty-six".