223212013 has 4 divisors (see below), whose sum is σ = 223261920. Its totient is φ = 223162108.

The previous prime is 223212007. The next prime is 223212029. The reversal of 223212013 is 310212322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223212013 - 2²⁵ = 189657581 is a prime.

It is a super-3 number, since 3×223212013³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212113) 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, 17503 + ... + 27436.

It is an arithmetic number, because the mean of its divisors is an integer number (55815480).

Almost surely, 2^223212013 is an apocalyptic number.

It is an amenable number.

223212013 is a deficient number, since it is larger than the sum of its proper divisors (49907).

223212013 is an equidigital number, since it uses as much as digits as its factorization.

223212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49906.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 223212013 is about 14940.2815569185. The cubic root of 223212013 is about 606.6048170185.

Adding to 223212013 its reverse (310212322), we get a palindrome (533424335).

The spelling of 223212013 in words is "two hundred twenty-three million, two hundred twelve thousand, thirteen".