212203213 has 4 divisors (see below), whose sum is σ = 212366880. Its totient is φ = 212039548.

The previous prime is 212203193. The next prime is 212203223. The reversal of 212203213 is 312302212.

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 212203213 - 2¹⁷ = 212072141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212203223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79873 + ... + 82486.

It is an arithmetic number, because the mean of its divisors is an integer number (53091720).

Almost surely, 2^212203213 is an apocalyptic number.

It is an amenable number.

212203213 is a deficient number, since it is larger than the sum of its proper divisors (163667).

212203213 is a wasteful number, since it uses less digits than its factorization.

212203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163666.

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

The square root of 212203213 is about 14567.1964701517. The cubic root of 212203213 is about 596.4636545314.

Adding to 212203213 its reverse (312302212), we get a palindrome (524505425).

The spelling of 212203213 in words is "two hundred twelve million, two hundred three thousand, two hundred thirteen".