220204213 has 4 divisors (see below), whose sum is σ = 233157420. Its totient is φ = 207251008.

The previous prime is 220204199. The next prime is 220204223. The reversal of 220204213 is 312402022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312402022 = 2 ⋅156201011.

It can be written as a sum of positive squares in 2 ways, for example, as 147306769 + 72897444 = 12137^2 + 8538^2 .

It is a cyclic number.

It is not a de Polignac number, because 220204213 - 2¹³ = 220196021 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 (220204223) 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, 6476578 + ... + 6476611.

It is an arithmetic number, because the mean of its divisors is an integer number (58289355).

Almost surely, 2^220204213 is an apocalyptic number.

It is an amenable number.

220204213 is a deficient number, since it is larger than the sum of its proper divisors (12953207).

220204213 is a wasteful number, since it uses less digits than its factorization.

220204213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953206.

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

The square root of 220204213 is about 14839.2793962510. The cubic root of 220204213 is about 603.8678030713.

Adding to 220204213 its reverse (312402022), we get a palindrome (532606235).

The spelling of 220204213 in words is "two hundred twenty million, two hundred four thousand, two hundred thirteen".