10221222221209 has 8 divisors (see below), whose sum is σ = 10311818060232. Its totient is φ = 10130628883200.

The previous prime is 10221222221207. The next prime is 10221222221267. The reversal of 10221222221209 is 90212222212201.

It can be written as a sum of positive squares in 4 ways, for example, as 35549971209 + 10185672250000 = 188547^2 + 3191500^2 .

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 10221222221209 - 2¹ = 10221222221207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221222221207) 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, 8124859 + ... + 9298159.

It is an arithmetic number, because the mean of its divisors is an integer number (1288977257529).

Almost surely, 2^{10221222221209} is an apocalyptic number.

It is an amenable number.

10221222221209 is a deficient number, since it is larger than the sum of its proper divisors (90595839023).

10221222221209 is a wasteful number, since it uses less digits than its factorization.

10221222221209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250507.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 10221222221209 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred nine".