210221012227 has 2 divisors, whose sum is σ = 210221012228. Its totient is φ = 210221012226.

The previous prime is 210221012213. The next prime is 210221012263. The reversal of 210221012227 is 722210122012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210221012227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210221012198 and 210221012207.

It is not a weakly prime, because it can be changed into another prime (210221012327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110506113 + 105110506114.

It is an arithmetic number, because the mean of its divisors is an integer number (105110506114).

Almost surely, 2^210221012227 is an apocalyptic number.

210221012227 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221012227 is an equidigital number, since it uses as much as digits as its factorization.

210221012227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 210221012227 its reverse (722210122012), we get a palindrome (932431134239).

The spelling of 210221012227 in words is "two hundred ten billion, two hundred twenty-one million, twelve thousand, two hundred twenty-seven".