1112143212 has 18 divisors (see below), whose sum is σ = 2811250988. Its totient is φ = 370714392.

The previous prime is 1112143183. The next prime is 1112143223. The reversal of 1112143212 is 2123412111.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15446398 + ... + 15446469.

Almost surely, 2^1112143212 is an apocalyptic number.

1112143212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1112143212 is an abundant number, since it is smaller than the sum of its proper divisors (1699107776).

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

1112143212 is a wasteful number, since it uses less digits than its factorization.

1112143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30892877 (or 30892872 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1112143212 is about 33348.8112531766. The cubic root of 1112143212 is about 1036.0647671479.

Adding to 1112143212 its reverse (2123412111), we get a palindrome (3235555323).

The spelling of 1112143212 in words is "one billion, one hundred twelve million, one hundred forty-three thousand, two hundred twelve".