212202223 has 8 divisors (see below), whose sum is σ = 219623040. Its totient is φ = 204817440.

The previous prime is 212202191. The next prime is 212202229. The reversal of 212202223 is 322202212.

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 212202223 - 2⁵ = 212202191 is a prime.

It is a super-2 number, since 2×212202223² = 90059566892283458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212202197 and 212202206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202229) 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, 3261 + ... + 20857.

It is an arithmetic number, because the mean of its divisors is an integer number (27452880).

Almost surely, 2^212202223 is an apocalyptic number.

212202223 is a deficient number, since it is larger than the sum of its proper divisors (7420817).

212202223 is a wasteful number, since it uses less digits than its factorization.

212202223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18017.

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

The square root of 212202223 is about 14567.1624896546. The cubic root of 212202223 is about 596.4627269615.

Adding to 212202223 its reverse (322202212), we get a palindrome (534404435).

The spelling of 212202223 in words is "two hundred twelve million, two hundred two thousand, two hundred twenty-three".