10221211021 has 8 divisors (see below), whose sum is σ = 11733768704. Its totient is φ = 8721749520.

The previous prime is 10221210977. The next prime is 10221211027. The reversal of 10221211021 is 12011212201.

10221211021 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 a de Polignac number, because none of the positive numbers 2^k-10221211021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10221210992 and 10221211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221211027) 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, 3272370 + ... + 3275491.

It is an arithmetic number, because the mean of its divisors is an integer number (1466721088).

Almost surely, 2^10221211021 is an apocalyptic number.

It is an amenable number.

10221211021 is a deficient number, since it is larger than the sum of its proper divisors (1512557683).

10221211021 is an equidigital number, since it uses as much as digits as its factorization.

10221211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548091.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10221211021 its reverse (12011212201), we get a palindrome (22232423222).

The spelling of 10221211021 in words is "ten billion, two hundred twenty-one million, two hundred eleven thousand, twenty-one".