111213132 has 12 divisors (see below), whose sum is σ = 259497336. Its totient is φ = 37071040.

The previous prime is 111213103. The next prime is 111213143. The reversal of 111213132 is 231312111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4633869 + ... + 4633892.

It is an arithmetic number, because the mean of its divisors is an integer number (21624778).

Almost surely, 2^111213132 is an apocalyptic number.

111213132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111213132 is an abundant number, since it is smaller than the sum of its proper divisors (148284204).

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

111213132 is a wasteful number, since it uses less digits than its factorization.

111213132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9267768 (or 9267766 counting only the distinct ones).

The product of its digits is 36, while the sum is 15.

The square root of 111213132 is about 10545.7636992301. The cubic root of 111213132 is about 480.8969513413.

Adding to 111213132 its reverse (231312111), we get a palindrome (342525243).

The spelling of 111213132 in words is "one hundred eleven million, two hundred thirteen thousand, one hundred thirty-two".