223212412 has 12 divisors (see below), whose sum is σ = 391230000. Its totient is φ = 111432416.

The previous prime is 223212349. The next prime is 223212419. The reversal of 223212412 is 214212322.

It is a super-3 number, since 3×223212412³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223212412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40537 + ... + 45712.

It is an arithmetic number, because the mean of its divisors is an integer number (32602500).

Almost surely, 2^223212412 is an apocalyptic number.

It is an amenable number.

223212412 is a deficient number, since it is larger than the sum of its proper divisors (168017588).

223212412 is a wasteful number, since it uses less digits than its factorization.

223212412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86900 (or 86898 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 223212412 is about 14940.2949100746. The cubic root of 223212412 is about 606.6051784613.

Adding to 223212412 its reverse (214212322), we get a palindrome (437424734).

The spelling of 223212412 in words is "two hundred twenty-three million, two hundred twelve thousand, four hundred twelve".