223122212 has 12 divisors (see below), whose sum is σ = 413432460. Its totient is φ = 104998656.

The previous prime is 223122203. The next prime is 223122223. The reversal of 223122212 is 212221322.

It can be written as a sum of positive squares in 2 ways, for example, as 195832036 + 27290176 = 13994^2 + 5224^2 .

It is a super-3 number, since 3×223122212³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640537 + ... + 1640672.

It is an arithmetic number, because the mean of its divisors is an integer number (34452705).

Almost surely, 2^223122212 is an apocalyptic number.

It is an amenable number.

223122212 is a deficient number, since it is larger than the sum of its proper divisors (190310248).

223122212 is a wasteful number, since it uses less digits than its factorization.

223122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281230 (or 3281228 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 223122212 is about 14937.2759230055. The cubic root of 223122212 is about 606.5234578580.

Adding to 223122212 its reverse (212221322), we get a palindrome (435343534).

The spelling of 223122212 in words is "two hundred twenty-three million, one hundred twenty-two thousand, two hundred twelve".