12221203723 has 2 divisors, whose sum is σ = 12221203724. Its totient is φ = 12221203722.

The previous prime is 12221203721. The next prime is 12221203739. The reversal of 12221203723 is 32730212221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12221203723 - 2¹ = 12221203721 is a prime.

Together with 12221203721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12221203721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110601861 + 6110601862.

It is an arithmetic number, because the mean of its divisors is an integer number (6110601862).

Almost surely, 2^12221203723 is an apocalyptic number.

12221203723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221203723 is an equidigital number, since it uses as much as digits as its factorization.

12221203723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 12221203723 its reverse (32730212221), we get a palindrome (44951415944).

The spelling of 12221203723 in words is "twelve billion, two hundred twenty-one million, two hundred three thousand, seven hundred twenty-three".