2112112243 has 4 divisors (see below), whose sum is σ = 2180244928. Its totient is φ = 2043979560.

The previous prime is 2112112237. The next prime is 2112112259. The reversal of 2112112243 is 3422112112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2112112243 - 2¹³ = 2112104051 is a prime.

It is a super-2 number, since 2×2112112243² = 8922036254060982098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112112243.

It is not an unprimeable number, because it can be changed into a prime (2112112213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34066296 + ... + 34066357.

It is an arithmetic number, because the mean of its divisors is an integer number (545061232).

Almost surely, 2^2112112243 is an apocalyptic number.

2112112243 is a deficient number, since it is larger than the sum of its proper divisors (68132685).

2112112243 is an equidigital number, since it uses as much as digits as its factorization.

2112112243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68132684.

The product of its digits is 192, while the sum is 19.

The square root of 2112112243 is about 45957.7223434756. The cubic root of 2112112243 is about 1283.0364603379.

Adding to 2112112243 its reverse (3422112112), we get a palindrome (5534224355).

The spelling of 2112112243 in words is "two billion, one hundred twelve million, one hundred twelve thousand, two hundred forty-three".