10221011112121 has 4 divisors (see below), whose sum is σ = 10230161526052. Its totient is φ = 10211860698192.

The previous prime is 10221011112097. The next prime is 10221011112133. The reversal of 10221011112121 is 12121111012201.

10221011112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 601460740521 + 9619550371600 = 775539^2 + 3101540^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221011112121 - 2¹³ = 10221011103929 is a prime.

It is a super-3 number, since 3×10221011112121³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221011112095 and 10221011112104.

It is not an unprimeable number, because it can be changed into a prime (10221011112181) 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, 4575205290 + ... + 4575207523.

It is an arithmetic number, because the mean of its divisors is an integer number (2557540381513).

Almost surely, 2^{10221011112121} is an apocalyptic number.

It is an amenable number.

10221011112121 is a deficient number, since it is larger than the sum of its proper divisors (9150413931).

10221011112121 is an equidigital number, since it uses as much as digits as its factorization.

10221011112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150413930.

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

Adding to 10221011112121 its reverse (12121111012201), we get a palindrome (22342122124322).

The spelling of 10221011112121 in words is "ten trillion, two hundred twenty-one billion, eleven million, one hundred twelve thousand, one hundred twenty-one".