212224013 has 4 divisors (see below), whose sum is σ = 221451168. Its totient is φ = 202996860.

The previous prime is 212223983. The next prime is 212224027. The reversal of 212224013 is 310422212.

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 212224013 - 2²² = 208029709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212223982 and 212224000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212224043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4613543 + ... + 4613588.

It is an arithmetic number, because the mean of its divisors is an integer number (55362792).

Almost surely, 2^212224013 is an apocalyptic number.

212224013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212224013 is a deficient number, since it is larger than the sum of its proper divisors (9227155).

212224013 is an equidigital number, since it uses as much as digits as its factorization.

212224013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227154.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212224013 is about 14567.9103855014. The cubic root of 212224013 is about 596.4831422016.

Adding to 212224013 its reverse (310422212), we get a palindrome (522646225).

The spelling of 212224013 in words is "two hundred twelve million, two hundred twenty-four thousand, thirteen".