220021132213 has 2 divisors, whose sum is σ = 220021132214. Its totient is φ = 220021132212.

The previous prime is 220021132189. The next prime is 220021132283. The reversal of 220021132213 is 312231120022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172389379204 + 47631753009 = 415198^2 + 218247^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021132213 - 2²⁹ = 219484261301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021132283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010566106 + 110010566107.

It is an arithmetic number, because the mean of its divisors is an integer number (110010566107).

Almost surely, 2^220021132213 is an apocalyptic number.

It is an amenable number.

220021132213 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021132213 is an equidigital number, since it uses as much as digits as its factorization.

220021132213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 220021132213 its reverse (312231120022), we get a palindrome (532252252235).

The spelling of 220021132213 in words is "two hundred twenty billion, twenty-one million, one hundred thirty-two thousand, two hundred thirteen".