221000001310247 has 2 divisors, whose sum is σ = 221000001310248. Its totient is φ = 221000001310246.

The previous prime is 221000001310169. The next prime is 221000001310273. The reversal of 221000001310247 is 742013100000122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221000001310247 - 2¹⁸ = 221000001048103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221000001316247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500000655123 + 110500000655124.

It is an arithmetic number, because the mean of its divisors is an integer number (110500000655124).

Almost surely, 2^{221000001310247} is an apocalyptic number.

221000001310247 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000001310247 is an equidigital number, since it uses as much as digits as its factorization.

221000001310247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 221000001310247 its reverse (742013100000122), we get a palindrome (963013101310369).

The spelling of 221000001310247 in words is "two hundred twenty-one trillion, one million, three hundred ten thousand, two hundred forty-seven".