22123303002721 has 2 divisors, whose sum is σ = 22123303002722. Its totient is φ = 22123303002720.

The previous prime is 22123303002707. The next prime is 22123303002751. The reversal of 22123303002721 is 12720030332122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13798698915600 + 8324604087121 = 3714660^2 + 2885239^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123303002721 - 2⁹ = 22123303002209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22123303002721.

It is not a weakly prime, because it can be changed into another prime (22123303002751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061651501360 + 11061651501361.

It is an arithmetic number, because the mean of its divisors is an integer number (11061651501361).

Almost surely, 2^{22123303002721} is an apocalyptic number.

It is an amenable number.

22123303002721 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123303002721 is an equidigital number, since it uses as much as digits as its factorization.

22123303002721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 22123303002721 its reverse (12720030332122), we get a palindrome (34843333334843).

The spelling of 22123303002721 in words is "twenty-two trillion, one hundred twenty-three billion, three hundred three million, two thousand, seven hundred twenty-one".