10447211521 has 2 divisors, whose sum is σ = 10447211522. Its totient is φ = 10447211520.

The previous prime is 10447211491. The next prime is 10447211527. The reversal of 10447211521 is 12511274401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5630851521 + 4816360000 = 75039^2 + 69400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10447211521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10447211521.

It is not a weakly prime, because it can be changed into another prime (10447211527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5223605760 + 5223605761.

It is an arithmetic number, because the mean of its divisors is an integer number (5223605761).

Almost surely, 2^10447211521 is an apocalyptic number.

It is an amenable number.

10447211521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10447211521 is an equidigital number, since it uses as much as digits as its factorization.

10447211521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 10447211521 its reverse (12511274401), we get a palindrome (22958485922).

The spelling of 10447211521 in words is "ten billion, four hundred forty-seven million, two hundred eleven thousand, five hundred twenty-one".