212223000 has 256 divisors, whose sum is σ = 741312000. Its totient is φ = 50112000.

The previous prime is 212222947. The next prime is 212223007. The reversal of 212223000 is 322212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212223007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1946946 + ... + 1947054.

It is an arithmetic number, because the mean of its divisors is an integer number (2895750).

Almost surely, 2^212223000 is an apocalyptic number.

212223000 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 212223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370656000).

212223000 is an abundant number, since it is smaller than the sum of its proper divisors (529089000).

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

212223000 is a wasteful number, since it uses less digits than its factorization.

212223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 212223000 is about 14567.8756172614. The cubic root of 212223000 is about 596.4821931441.

Adding to 212223000 its reverse (322212), we get a palindrome (212545212).

The spelling of 212223000 in words is "two hundred twelve million, two hundred twenty-three thousand".