212112143 has 8 divisors (see below), whose sum is σ = 223417200. Its totient is φ = 200821248.

The previous prime is 212112091. The next prime is 212112161. The reversal of 212112143 is 341211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212112143 - 2¹⁸ = 211849999 is a prime.

It is a super-2 number, since 2×212112143² = 89983122416104898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 43055 + ... + 47727.

It is an arithmetic number, because the mean of its divisors is an integer number (27927150).

Almost surely, 2^212112143 is an apocalyptic number.

212112143 is a deficient number, since it is larger than the sum of its proper divisors (11305057).

212112143 is a wasteful number, since it uses less digits than its factorization.

212112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081.

The product of its digits is 96, while the sum is 17.

The square root of 212112143 is about 14564.0702758535. The cubic root of 212112143 is about 596.3783153938.

Adding to 212112143 its reverse (341211212), we get a palindrome (553323355).

The spelling of 212112143 in words is "two hundred twelve million, one hundred twelve thousand, one hundred forty-three".