220010012221 has 2 divisors, whose sum is σ = 220010012222. Its totient is φ = 220010012220.

The previous prime is 220010012207. The next prime is 220010012231. The reversal of 220010012221 is 122210010022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208379468196 + 11630544025 = 456486^2 + 107845^2 .

It is a cyclic number.

It is not a de Polignac number, because 220010012221 - 2¹³ = 220010004029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220010012231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005006110 + 110005006111.

It is an arithmetic number, because the mean of its divisors is an integer number (110005006111).

Almost surely, 2^220010012221 is an apocalyptic number.

It is an amenable number.

220010012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220010012221 is an equidigital number, since it uses as much as digits as its factorization.

220010012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220010012221 its reverse (122210010022), we get a palindrome (342220022243).

The spelling of 220010012221 in words is "two hundred twenty billion, ten million, twelve thousand, two hundred twenty-one".