201010021000121 has 2 divisors, whose sum is σ = 201010021000122. Its totient is φ = 201010021000120.

The previous prime is 201010021000081. The next prime is 201010021000127. The reversal of 201010021000121 is 121000120010102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151155689222521 + 49854331777600 = 12294539^2 + 7060760^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010021000121 - 2³⁰ = 201008947258297 is a prime.

It is not a weakly prime, because it can be changed into another prime (201010021000127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505010500060 + 100505010500061.

It is an arithmetic number, because the mean of its divisors is an integer number (100505010500061).

Almost surely, 2^{201010021000121} is an apocalyptic number.

It is an amenable number.

201010021000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010021000121 is an equidigital number, since it uses as much as digits as its factorization.

201010021000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201010021000121 its reverse (121000120010102), we get a palindrome (322010141010223).

The spelling of 201010021000121 in words is "two hundred one trillion, ten billion, twenty-one million, one hundred twenty-one", and thus it is an aban number.