220110120012221 has 2 divisors, whose sum is σ = 220110120012222. Its totient is φ = 220110120012220.

The previous prime is 220110120012197. The next prime is 220110120012247. The reversal of 220110120012221 is 122210021011022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145391626044025 + 74718493968196 = 12057845^2 + 8643986^2 .

It is a cyclic number.

It is not a de Polignac number, because 220110120012221 - 2¹⁴ = 220110119995837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220110120012221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220110120012521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055060006110 + 110055060006111.

It is an arithmetic number, because the mean of its divisors is an integer number (110055060006111).

Almost surely, 2^{220110120012221} is an apocalyptic number.

It is an amenable number.

220110120012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220110120012221 is an equidigital number, since it uses as much as digits as its factorization.

220110120012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220110120012221 its reverse (122210021011022), we get a palindrome (342320141023243).

The spelling of 220110120012221 in words is "two hundred twenty trillion, one hundred ten billion, one hundred twenty million, twelve thousand, two hundred twenty-one".