220221020213 has 2 divisors, whose sum is σ = 220221020214. Its totient is φ = 220221020212.

The previous prime is 220221020197. The next prime is 220221020263. The reversal of 220221020213 is 312020122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218315086564 + 1905933649 = 467242^2 + 43657^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221020213 - 2⁴ = 220221020197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220221020191 and 220221020200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220221020263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110510106 + 110110510107.

It is an arithmetic number, because the mean of its divisors is an integer number (110110510107).

Almost surely, 2^220221020213 is an apocalyptic number.

It is an amenable number.

220221020213 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221020213 is an equidigital number, since it uses as much as digits as its factorization.

220221020213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 220221020213 its reverse (312020122022), we get a palindrome (532241142235).

The spelling of 220221020213 in words is "two hundred twenty billion, two hundred twenty-one million, twenty thousand, two hundred thirteen".