10211221002217 has 2 divisors, whose sum is σ = 10211221002218. Its totient is φ = 10211221002216.

The previous prime is 10211221002193. The next prime is 10211221002233. The reversal of 10211221002217 is 71220012211201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8015359361881 + 2195861640336 = 2831141^2 + 1481844^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211221002217 - 2⁷ = 10211221002089 is a prime.

It is a super-2 number, since 2×10211221002217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10211221002277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105610501108 + 5105610501109.

It is an arithmetic number, because the mean of its divisors is an integer number (5105610501109).

Almost surely, 2^{10211221002217} is an apocalyptic number.

It is an amenable number.

10211221002217 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211221002217 is an equidigital number, since it uses as much as digits as its factorization.

10211221002217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 10211221002217 its reverse (71220012211201), we get a palindrome (81431233213418).

The spelling of 10211221002217 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, two thousand, two hundred seventeen".