201220000447 has 2 divisors, whose sum is σ = 201220000448. Its totient is φ = 201220000446.

The previous prime is 201220000417. The next prime is 201220000459. The reversal of 201220000447 is 744000022102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201220000447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201220000417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610000223 + 100610000224.

It is an arithmetic number, because the mean of its divisors is an integer number (100610000224).

Almost surely, 2^201220000447 is an apocalyptic number.

201220000447 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220000447 is an equidigital number, since it uses as much as digits as its factorization.

201220000447 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 22.

Adding to 201220000447 its reverse (744000022102), we get a palindrome (945220022549).

The spelling of 201220000447 in words is "two hundred one billion, two hundred twenty million, four hundred forty-seven", and thus it is an aban number.