10221010000121 has 4 divisors (see below), whose sum is σ = 10272893299812. Its totient is φ = 10169126700432.

The previous prime is 10221010000067. The next prime is 10221010000147. The reversal of 10221010000121 is 12100001012201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8165672014096 + 2055337986025 = 2857564^2 + 1433645^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221010000121 - 2¹⁰ = 10221009999097 is a prime.

It is a super-3 number, since 3×10221010000121³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10221019000121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25941649550 + ... + 25941649943.

It is an arithmetic number, because the mean of its divisors is an integer number (2568223324953).

Almost surely, 2^{10221010000121} is an apocalyptic number.

It is an amenable number.

10221010000121 is a deficient number, since it is larger than the sum of its proper divisors (51883299691).

10221010000121 is an equidigital number, since it uses as much as digits as its factorization.

10221010000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51883299690.

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

Adding to 10221010000121 its reverse (12100001012201), we get a palindrome (22321011012322).

The spelling of 10221010000121 in words is "ten trillion, two hundred twenty-one billion, ten million, one hundred twenty-one", and thus it is an aban number.