10211121021 has 8 divisors (see below), whose sum is σ = 13616125920. Its totient is φ = 6806765072.

The previous prime is 10211121001. The next prime is 10211121023. The reversal of 10211121021 is 12012111201.

10211121021 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 10211121021 - 2⁹ = 10211120509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10211120988 and 10211121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124251 + ... + 189368.

It is an arithmetic number, because the mean of its divisors is an integer number (1702015740).

Almost surely, 2^10211121021 is an apocalyptic number.

It is an amenable number.

10211121021 is a deficient number, since it is larger than the sum of its proper divisors (3405004899).

10211121021 is a wasteful number, since it uses less digits than its factorization.

10211121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324475.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10211121021 its reverse (12012111201), we get a palindrome (22223232222).

The spelling of 10211121021 in words is "ten billion, two hundred eleven million, one hundred twenty-one thousand, twenty-one".