220012110221 has 2 divisors, whose sum is σ = 220012110222. Its totient is φ = 220012110220.

The previous prime is 220012110211. The next prime is 220012110233. The reversal of 220012110221 is 122011210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219665629225 + 346480996 = 468685^2 + 18614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220012110221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220012110196 and 220012110205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220012110211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110006055110 + 110006055111.

It is an arithmetic number, because the mean of its divisors is an integer number (110006055111).

Almost surely, 2^220012110221 is an apocalyptic number.

It is an amenable number.

220012110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220012110221 is an equidigital number, since it uses as much as digits as its factorization.

220012110221 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 14.

Adding to 220012110221 its reverse (122011210022), we get a palindrome (342023320243).

The spelling of 220012110221 in words is "two hundred twenty billion, twelve million, one hundred ten thousand, two hundred twenty-one".