223153212 has 12 divisors (see below), whose sum is σ = 520690856. Its totient is φ = 74384400.

The previous prime is 223153207. The next prime is 223153279. The reversal of 223153212 is 212351322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×223153212³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9298039 + ... + 9298062.

Almost surely, 2^223153212 is an apocalyptic number.

It is an amenable number.

223153212 is an abundant number, since it is smaller than the sum of its proper divisors (297537644).

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

223153212 is a wasteful number, since it uses less digits than its factorization.

223153212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18596108 (or 18596106 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 223153212 is about 14938.3135594350. The cubic root of 223153212 is about 606.5515461365.

The spelling of 223153212 in words is "two hundred twenty-three million, one hundred fifty-three thousand, two hundred twelve".