111243143412 has 36 divisors (see below), whose sum is σ = 282113928096. Its totient is φ = 36960258960.

The previous prime is 111243143411. The next prime is 111243143419. The reversal of 111243143412 is 214341342111.

It is a happy number.

111243143412 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 4 + 314 + 341 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 (111243143411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5021664 + ... + 5043767.

Almost surely, 2^111243143412 is an apocalyptic number.

111243143412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111243143412 is an abundant number, since it is smaller than the sum of its proper divisors (170870784684).

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

111243143412 is a wasteful number, since it uses less digits than its factorization.

111243143412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065748 (or 10065743 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 111243143412 its reverse (214341342111), we get a palindrome (325584485523).

The spelling of 111243143412 in words is "one hundred eleven billion, two hundred forty-three million, one hundred forty-three thousand, four hundred twelve".