10254201221221 has 2 divisors, whose sum is σ = 10254201221222. Its totient is φ = 10254201221220.

The previous prime is 10254201221191. The next prime is 10254201221293. The reversal of 10254201221221 is 12212210245201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9925429716225 + 328771504996 = 3150465^2 + 573386^2 .

It is a cyclic number.

It is not a de Polignac number, because 10254201221221 - 2²⁵ = 10254167666789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10254201021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5127100610610 + 5127100610611.

It is an arithmetic number, because the mean of its divisors is an integer number (5127100610611).

Almost surely, 2^{10254201221221} is an apocalyptic number.

It is an amenable number.

10254201221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10254201221221 is an equidigital number, since it uses as much as digits as its factorization.

10254201221221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 10254201221221 its reverse (12212210245201), we get a palindrome (22466411466422).

The spelling of 10254201221221 in words is "ten trillion, two hundred fifty-four billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-one".