212023213 has 8 divisors (see below), whose sum is σ = 213290168. Its totient is φ = 210760704.

The previous prime is 212023199. The next prime is 212023241. The reversal of 212023213 is 312320212.

It can be written as a sum of positive squares in 4 ways, for example, as 27008809 + 185014404 = 5197^2 + 13602^2 .

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 212023213 - 2⁵ = 212023181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212023313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145195 + ... + 146647.

It is an arithmetic number, because the mean of its divisors is an integer number (26661271).

Almost surely, 2^212023213 is an apocalyptic number.

It is an amenable number.

212023213 is a deficient number, since it is larger than the sum of its proper divisors (1266955).

212023213 is a wasteful number, since it uses less digits than its factorization.

212023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212023213 is about 14561.0168944343. The cubic root of 212023213 is about 596.2949580142.

Adding to 212023213 its reverse (312320212), we get a palindrome (524343425).

The spelling of 212023213 in words is "two hundred twelve million, twenty-three thousand, two hundred thirteen".