10202003247221 has 2 divisors, whose sum is σ = 10202003247222. Its totient is φ = 10202003247220.

The previous prime is 10202003247203. The next prime is 10202003247223. The reversal of 10202003247221 is 12274230020201.

10202003247221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8295148816900 + 1906854430321 = 2880130^2 + 1380889^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202003247221 - 2⁴² = 5803956736117 is a prime.

Together with 10202003247223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202003247223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101001623610 + 5101001623611.

It is an arithmetic number, because the mean of its divisors is an integer number (5101001623611).

Almost surely, 2^{10202003247221} is an apocalyptic number.

It is an amenable number.

10202003247221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202003247221 is an equidigital number, since it uses as much as digits as its factorization.

10202003247221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 10202003247221 its reverse (12274230020201), we get a palindrome (22476233267422).

The spelling of 10202003247221 in words is "ten trillion, two hundred two billion, three million, two hundred forty-seven thousand, two hundred twenty-one".