12221330423 has 12 divisors (see below), whose sum is σ = 13323477960. Its totient is φ = 11178842976.

The previous prime is 12221330417. The next prime is 12221330437. The reversal of 12221330423 is 32403312221.

It is not a de Polignac number, because 12221330423 - 2¹⁰ = 12221329399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221330123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366440 + ... + 398397.

It is an arithmetic number, because the mean of its divisors is an integer number (1110289830).

Almost surely, 2^12221330423 is an apocalyptic number.

12221330423 is a deficient number, since it is larger than the sum of its proper divisors (1102147537).

12221330423 is an equidigital number, since it uses as much as digits as its factorization.

12221330423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764914 (or 764885 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12221330423 its reverse (32403312221), we get a palindrome (44624642644).

The spelling of 12221330423 in words is "twelve billion, two hundred twenty-one million, three hundred thirty thousand, four hundred twenty-three".