210221220047 has 2 divisors, whose sum is σ = 210221220048. Its totient is φ = 210221220046.

The previous prime is 210221219977. The next prime is 210221220203. The reversal of 210221220047 is 740022122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210221220047 - 2¹⁶ = 210221154511 is a prime.

It is a super-2 number, since 2×210221220047² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210221220947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110610023 + 105110610024.

It is an arithmetic number, because the mean of its divisors is an integer number (105110610024).

Almost surely, 2^210221220047 is an apocalyptic number.

210221220047 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221220047 is an equidigital number, since it uses as much as digits as its factorization.

210221220047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 210221220047 its reverse (740022122012), we get a palindrome (950243342059).

The spelling of 210221220047 in words is "two hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, forty-seven".