22145320213 has 2 divisors, whose sum is σ = 22145320214. Its totient is φ = 22145320212.

The previous prime is 22145320139. The next prime is 22145320229. The reversal of 22145320213 is 31202354122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22139356849 + 5963364 = 148793^2 + 2442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22145320213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22145620213) 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, 11072660106 + 11072660107.

It is an arithmetic number, because the mean of its divisors is an integer number (11072660107).

Almost surely, 2^22145320213 is an apocalyptic number.

It is an amenable number.

22145320213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145320213 is an equidigital number, since it uses as much as digits as its factorization.

22145320213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 22145320213 its reverse (31202354122), we get a palindrome (53347674335).

The spelling of 22145320213 in words is "twenty-two billion, one hundred forty-five million, three hundred twenty thousand, two hundred thirteen".