10212221222321 has 4 divisors (see below), whose sum is σ = 10379634685044. Its totient is φ = 10044807759600.

The previous prime is 10212221222279. The next prime is 10212221222323. The reversal of 10212221222321 is 12322212221201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1421209701025 + 8791011521296 = 1192145^2 + 2964964^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212221222321 - 2³⁸ = 9937343315377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212221222323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83706731270 + ... + 83706731391.

It is an arithmetic number, because the mean of its divisors is an integer number (2594908671261).

Almost surely, 2^{10212221222321} is an apocalyptic number.

It is an amenable number.

10212221222321 is a deficient number, since it is larger than the sum of its proper divisors (167413462723).

10212221222321 is an equidigital number, since it uses as much as digits as its factorization.

10212221222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167413462722.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 10212221222321 its reverse (12322212221201), we get a palindrome (22534433443522).

The spelling of 10212221222321 in words is "ten trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-one".