10221332221 has 4 divisors (see below), whose sum is σ = 10394575200. Its totient is φ = 10048089244.

The previous prime is 10221332201. The next prime is 10221332281. The reversal of 10221332221 is 12223312201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10221332221 - 2⁹ = 10221331709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221332201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86621401 + ... + 86621518.

It is an arithmetic number, because the mean of its divisors is an integer number (2598643800).

Almost surely, 2^10221332221 is an apocalyptic number.

It is an amenable number.

10221332221 is a deficient number, since it is larger than the sum of its proper divisors (173242979).

10221332221 is an equidigital number, since it uses as much as digits as its factorization.

10221332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173242978.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 10221332221 its reverse (12223312201), we get a palindrome (22444644422).

The spelling of 10221332221 in words is "ten billion, two hundred twenty-one million, three hundred thirty-two thousand, two hundred twenty-one".