212022223 has 8 divisors (see below), whose sum is σ = 246418560. Its totient is φ = 178652760.

The previous prime is 212022191. The next prime is 212022227. The reversal of 212022223 is 322220212.

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 212022223 - 2⁵ = 212022191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212022197 and 212022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022227) 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, 256273 + ... + 257098.

It is an arithmetic number, because the mean of its divisors is an integer number (30802320).

Almost surely, 2^212022223 is an apocalyptic number.

212022223 is a deficient number, since it is larger than the sum of its proper divisors (34396337).

212022223 is an equidigital number, since it uses as much as digits as its factorization.

212022223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513437.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 212022223 is about 14560.9828995161. The cubic root of 212022223 is about 596.2940299194.

Adding to 212022223 its reverse (322220212), we get a palindrome (534242435).

The spelling of 212022223 in words is "two hundred twelve million, twenty-two thousand, two hundred twenty-three".