210022100220221 has 2 divisors, whose sum is σ = 210022100220222. Its totient is φ = 210022100220220.

The previous prime is 210022100220211. The next prime is 210022100220241. The reversal of 210022100220221 is 122022001220012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186208812847225 + 23813287372996 = 13645835^2 + 4879886^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022100220221 - 2²⁶ = 210022033111357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210022100220221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022100220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011050110110 + 105011050110111.

It is an arithmetic number, because the mean of its divisors is an integer number (105011050110111).

Almost surely, 2^{210022100220221} is an apocalyptic number.

It is an amenable number.

210022100220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022100220221 is an equidigital number, since it uses as much as digits as its factorization.

210022100220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210022100220221 its reverse (122022001220012), we get a palindrome (332044101440233).

The spelling of 210022100220221 in words is "two hundred ten trillion, twenty-two billion, one hundred million, two hundred twenty thousand, two hundred twenty-one".