22001321213 has 2 divisors, whose sum is σ = 22001321214. Its totient is φ = 22001321212.

The previous prime is 22001321189. The next prime is 22001321233. The reversal of 22001321213 is 31212310022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21733246084 + 268075129 = 147422^2 + 16373^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001321213 - 2¹⁶ = 22001255677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22001321191 and 22001321200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001321233) 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 as a sum of consecutive naturals, namely, 11000660606 + 11000660607.

It is an arithmetic number, because the mean of its divisors is an integer number (11000660607).

Almost surely, 2^22001321213 is an apocalyptic number.

It is an amenable number.

22001321213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001321213 is an equidigital number, since it uses as much as digits as its factorization.

22001321213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22001321213 its reverse (31212310022), we get a palindrome (53213631235).

The spelling of 22001321213 in words is "twenty-two billion, one million, three hundred twenty-one thousand, two hundred thirteen".