22210001321 has 4 divisors (see below), whose sum is σ = 22235327172. Its totient is φ = 22184675472.

The previous prime is 22210001299. The next prime is 22210001323. The reversal of 22210001321 is 12310001222.

It is a happy number.

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 7903210000 + 14306791321 = 88900^2 + 119611^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210001321 - 2⁶ = 22210001257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22210001296 and 22210001305.

It is not an unprimeable number, because it can be changed into a prime (22210001323) 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, 12661610 + ... + 12663363.

It is an arithmetic number, because the mean of its divisors is an integer number (5558831793).

Almost surely, 2^22210001321 is an apocalyptic number.

It is an amenable number.

22210001321 is a deficient number, since it is larger than the sum of its proper divisors (25325851).

22210001321 is an equidigital number, since it uses as much as digits as its factorization.

22210001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25325850.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22210001321 its reverse (12310001222), we get a palindrome (34520002543).

Subtracting from 22210001321 its reverse (12310001222), we obtain a palindrome (9900000099).

The spelling of 22210001321 in words is "twenty-two billion, two hundred ten million, one thousand, three hundred twenty-one".