10221221208 has 64 divisors (see below), whose sum is σ = 27898485120. Its totient is φ = 3094848000.

The previous prime is 10221221201. The next prime is 10221221233. The reversal of 10221221208 is 80212212201.

10221221208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221221201) 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 15 ways as a sum of consecutive naturals, for example, 327483 + ... + 357333.

It is an arithmetic number, because the mean of its divisors is an integer number (435913830).

Almost surely, 2^10221221208 is an apocalyptic number.

It is an amenable number.

10221221208 is an abundant number, since it is smaller than the sum of its proper divisors (17677263912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221221208 is a wasteful number, since it uses less digits than its factorization.

10221221208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31168 (or 31164 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 10221221208 its reverse (80212212201), we get a palindrome (90433433409).

The spelling of 10221221208 in words is "ten billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred eight".