210022212200221 has 2 divisors, whose sum is σ = 210022212200222. Its totient is φ = 210022212200220.

The previous prime is 210022212200219. The next prime is 210022212200237. The reversal of 210022212200221 is 122002212220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172317761444196 + 37704450756025 = 13126986^2 + 6140395^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022212200221 - 2¹ = 210022212200219 is a prime.

Together with 210022212200219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022212200201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011106100110 + 105011106100111.

It is an arithmetic number, because the mean of its divisors is an integer number (105011106100111).

Almost surely, 2^{210022212200221} is an apocalyptic number.

It is an amenable number.

210022212200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022212200221 is an equidigital number, since it uses as much as digits as its factorization.

210022212200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 210022212200221 its reverse (122002212220012), we get a palindrome (332024424420233).

The spelling of 210022212200221 in words is "two hundred ten trillion, twenty-two billion, two hundred twelve million, two hundred thousand, two hundred twenty-one".