223400212 has 36 divisors (see below), whose sum is σ = 464474304. Its totient is φ = 93702000.

The previous prime is 223400197. The next prime is 223400249. The reversal of 223400212 is 212004322.

223400212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2914 + ... + 21337.

It is an arithmetic number, because the mean of its divisors is an integer number (12902064).

Almost surely, 2^223400212 is an apocalyptic number.

It is an amenable number.

223400212 is an abundant number, since it is smaller than the sum of its proper divisors (241074092).

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

223400212 is a wasteful number, since it uses less digits than its factorization.

223400212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24316 (or 24307 counting only the distinct ones).

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

The square root of 223400212 is about 14946.5786051524. The cubic root of 223400212 is about 606.7752534098.

Adding to 223400212 its reverse (212004322), we get a palindrome (435404534).

The spelling of 223400212 in words is "two hundred twenty-three million, four hundred thousand, two hundred twelve".