10221201000121 has 2 divisors, whose sum is σ = 10221201000122. Its totient is φ = 10221201000120.

The previous prime is 10221201000119. The next prime is 10221201000133. The reversal of 10221201000121 is 12100010212201.

10221201000121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9781381350400 + 439819649721 = 3127520^2 + 663189^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221201000121 - 2¹ = 10221201000119 is a prime.

Together with 10221201000119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10221201000151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110600500060 + 5110600500061.

It is an arithmetic number, because the mean of its divisors is an integer number (5110600500061).

Almost surely, 2^{10221201000121} is an apocalyptic number.

It is an amenable number.

10221201000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221201000121 is an equidigital number, since it uses as much as digits as its factorization.

10221201000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10221201000121 its reverse (12100010212201), we get a palindrome (22321211212322).

The spelling of 10221201000121 in words is "ten trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty-one", and thus it is an aban number.