22121313073 has 2 divisors, whose sum is σ = 22121313074. Its totient is φ = 22121313072.

The previous prime is 22121313047. The next prime is 22121313079. The reversal of 22121313073 is 37031312122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21016880784 + 1104432289 = 144972^2 + 33233^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121313073 - 2⁵ = 22121313041 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121313079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060656536 + 11060656537.

It is an arithmetic number, because the mean of its divisors is an integer number (11060656537).

Almost surely, 2^22121313073 is an apocalyptic number.

It is an amenable number.

22121313073 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121313073 is an equidigital number, since it uses as much as digits as its factorization.

22121313073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 22121313073 its reverse (37031312122), we get a palindrome (59152625195).

The spelling of 22121313073 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirteen thousand, seventy-three".