202220213 has 4 divisors (see below), whose sum is σ = 217775628. Its totient is φ = 186664800.

The previous prime is 202220201. The next prime is 202220233. The reversal of 202220213 is 312022202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47018449 + 155201764 = 6857^2 + 12458^2 .

It is a cyclic number.

It is not a de Polignac number, because 202220213 - 2⁸ = 202219957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220233) by changing a digit.

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, 7777688 + ... + 7777713.

It is an arithmetic number, because the mean of its divisors is an integer number (54443907).

Almost surely, 2^202220213 is an apocalyptic number.

It is an amenable number.

202220213 is a deficient number, since it is larger than the sum of its proper divisors (15555415).

202220213 is a wasteful number, since it uses less digits than its factorization.

202220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15555414.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 202220213 is about 14220.4153596159. The cubic root of 202220213 is about 586.9595698990.

Adding to 202220213 its reverse (312022202), we get a palindrome (514242415).

The spelling of 202220213 in words is "two hundred two million, two hundred twenty thousand, two hundred thirteen".