10021220231317 has 2 divisors, whose sum is σ = 10021220231318. Its totient is φ = 10021220231316.

The previous prime is 10021220231257. The next prime is 10021220231333. The reversal of 10021220231317 is 71313202212001.

10021220231317 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., 9833454875556 + 187765355761 = 3135834^2 + 433319^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021220231317 - 2¹¹ = 10021220229269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021220231291 and 10021220231300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021220231717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010610115658 + 5010610115659.

It is an arithmetic number, because the mean of its divisors is an integer number (5010610115659).

Almost surely, 2^{10021220231317} is an apocalyptic number.

It is an amenable number.

10021220231317 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021220231317 is an equidigital number, since it uses as much as digits as its factorization.

10021220231317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 10021220231317 its reverse (71313202212001), we get a palindrome (81334422443318).

The spelling of 10021220231317 in words is "ten trillion, twenty-one billion, two hundred twenty million, two hundred thirty-one thousand, three hundred seventeen".