10202241220121 has 2 divisors, whose sum is σ = 10202241220122. Its totient is φ = 10202241220120.

The previous prime is 10202241220091. The next prime is 10202241220153. The reversal of 10202241220121 is 12102214220201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8308345056400 + 1893896163721 = 2882420^2 + 1376189^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202241220121 - 2²⁶ = 10202174111257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10202241220093 and 10202241220102.

It is not a weakly prime, because it can be changed into another prime (10202241220181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101120610060 + 5101120610061.

It is an arithmetic number, because the mean of its divisors is an integer number (5101120610061).

Almost surely, 2^{10202241220121} is an apocalyptic number.

It is an amenable number.

10202241220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202241220121 is an equidigital number, since it uses as much as digits as its factorization.

10202241220121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 10202241220121 its reverse (12102214220201), we get a palindrome (22304455440322).

The spelling of 10202241220121 in words is "ten trillion, two hundred two billion, two hundred forty-one million, two hundred twenty thousand, one hundred twenty-one".