10021022221 has 8 divisors (see below), whose sum is σ = 11609482304. Its totient is φ = 8471783520.

The previous prime is 10021022189. The next prime is 10021022251. The reversal of 10021022221 is 12222012001.

It is a happy number.

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 10021022221 - 2⁵ = 10021022189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021022251) 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, 9804795 + ... + 9805816.

It is an arithmetic number, because the mean of its divisors is an integer number (1451185288).

Almost surely, 2^10021022221 is an apocalyptic number.

It is an amenable number.

10021022221 is a deficient number, since it is larger than the sum of its proper divisors (1588460083).

10021022221 is an equidigital number, since it uses as much as digits as its factorization.

10021022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19610691.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10021022221 its reverse (12222012001), we get a palindrome (22243034222).

The spelling of 10021022221 in words is "ten billion, twenty-one million, twenty-two thousand, two hundred twenty-one".