10211221002121 has 8 divisors (see below), whose sum is σ = 10670006603520. Its totient is φ = 9753670356672.

The previous prime is 10211221002089. The next prime is 10211221002173. The reversal of 10211221002121 is 12120012211201.

10211221002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10211221002121 - 2⁵ = 10211221002089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211221002095 and 10211221002104.

It is not an unprimeable number, because it can be changed into a prime (10211231002121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308722080 + ... + 308755153.

It is an arithmetic number, because the mean of its divisors is an integer number (1333750825440).

Almost surely, 2^{10211221002121} is an apocalyptic number.

It is an amenable number.

10211221002121 is a deficient number, since it is larger than the sum of its proper divisors (458785601399).

10211221002121 is an equidigital number, since it uses as much as digits as its factorization.

10211221002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617477975.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10211221002121 its reverse (12120012211201), we get a palindrome (22331233213322).

The spelling of 10211221002121 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, two thousand, one hundred twenty-one".