212112423 has 12 divisors (see below), whose sum is σ = 309419448. Its totient is φ = 140007600.

The previous prime is 212112403. The next prime is 212112427. The reversal of 212112423 is 324211212.

It is a happy number.

It is not a de Polignac number, because 212112423 - 2⁵ = 212112391 is a prime.

212112423 is a modest number, since divided by 12423 gives 2121 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 212112396 and 212112405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112427) 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, 115765 + ... + 117582.

It is an arithmetic number, because the mean of its divisors is an integer number (25784954).

Almost surely, 2^212112423 is an apocalyptic number.

212112423 is a deficient number, since it is larger than the sum of its proper divisors (97307025).

212112423 is a wasteful number, since it uses less digits than its factorization.

212112423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233454 (or 233451 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212112423 is about 14564.0798885477. The cubic root of 212112423 is about 596.3785778113.

Adding to 212112423 its reverse (324211212), we get a palindrome (536323635).

The spelling of 212112423 in words is "two hundred twelve million, one hundred twelve thousand, four hundred twenty-three".