111111333312 has 56 divisors (see below), whose sum is σ = 335979511936. Its totient is φ = 31746094848.

The previous prime is 111111333299. The next prime is 111111333313. The reversal of 111111333312 is 213333111111.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111333313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41334718 + ... + 41337405.

Almost surely, 2^111111333312 is an apocalyptic number.

111111333312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111333312 is an abundant number, since it is smaller than the sum of its proper divisors (224868178624).

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

111111333312 is an equidigital number, since it uses as much as digits as its factorization.

111111333312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82672145 (or 82672135 counting only the distinct ones).

The product of its digits is 162, while the sum is 21.

Adding to 111111333312 its reverse (213333111111), we get a palindrome (324444444423).

The spelling of 111111333312 in words is "one hundred eleven billion, one hundred eleven million, three hundred thirty-three thousand, three hundred twelve".