220211506213 has 4 divisors (see below), whose sum is σ = 220777603020. Its totient is φ = 219645409408.

The previous prime is 220211506201. The next prime is 220211506223. The reversal of 220211506213 is 312605112022.

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 42099653124 + 178111853089 = 205182^2 + 422033^2 .

It is a cyclic number.

It is not a de Polignac number, because 220211506213 - 2¹³ = 220211498021 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 (220211506223) 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, 283047820 + ... + 283048597.

It is an arithmetic number, because the mean of its divisors is an integer number (55194400755).

Almost surely, 2^220211506213 is an apocalyptic number.

It is an amenable number.

220211506213 is a deficient number, since it is larger than the sum of its proper divisors (566096807).

220211506213 is an equidigital number, since it uses as much as digits as its factorization.

220211506213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566096806.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 220211506213 its reverse (312605112022), we get a palindrome (532816618235).

The spelling of 220211506213 in words is "two hundred twenty billion, two hundred eleven million, five hundred six thousand, two hundred thirteen".