223212300 has 72 divisors (see below), whose sum is σ = 647625216. Its totient is φ = 59357760.

The previous prime is 223212293. The next prime is 223212313. The reversal of 223212300 is 3212322.

It is a super-3 number, since 3×223212300³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 223212300.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138097 + ... + 139703.

Almost surely, 2^223212300 is an apocalyptic number.

223212300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223212300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323812608).

223212300 is an abundant number, since it is smaller than the sum of its proper divisors (424412916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223212300 is a wasteful number, since it uses less digits than its factorization.

223212300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087 (or 2080 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 223212300 is about 14940.2911618214. The cubic root of 223212300 is about 606.6050770037.

Adding to 223212300 its reverse (3212322), we get a palindrome (226424622).

The spelling of 223212300 in words is "two hundred twenty-three million, two hundred twelve thousand, three hundred".