212113223 has 16 divisors (see below), whose sum is σ = 249043200. Its totient is φ = 176907456.

The previous prime is 212113219. The next prime is 212113229. The reversal of 212113223 is 322311212.

212113223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212113223 - 2² = 212113219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212113229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36203 + ... + 41651.

It is an arithmetic number, because the mean of its divisors is an integer number (15565200).

Almost surely, 2^212113223 is an apocalyptic number.

212113223 is a deficient number, since it is larger than the sum of its proper divisors (36929977).

212113223 is an equidigital number, since it uses as much as digits as its factorization.

212113223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606.

The product of its digits is 144, while the sum is 17.

The square root of 212113223 is about 14564.1073533533. The cubic root of 212113223 is about 596.3793275745.

Adding to 212113223 its reverse (322311212), we get a palindrome (534424435).

The spelling of 212113223 in words is "two hundred twelve million, one hundred thirteen thousand, two hundred twenty-three".