12221003123 has 12 divisors (see below), whose sum is σ = 14219271072. Its totient is φ = 10472933520.

The previous prime is 12221003111. The next prime is 12221003141. The reversal of 12221003123 is 32130012221.

It is not a de Polignac number, because 12221003123 - 2⁴ = 12221003107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221003183) 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, 234086 + ... + 281492.

It is an arithmetic number, because the mean of its divisors is an integer number (1184939256).

Almost surely, 2^12221003123 is an apocalyptic number.

12221003123 is a deficient number, since it is larger than the sum of its proper divisors (1998267949).

12221003123 is an equidigital number, since it uses as much as digits as its factorization.

12221003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52682 (or 52675 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12221003123 its reverse (32130012221), we get a palindrome (44351015344).

The spelling of 12221003123 in words is "twelve billion, two hundred twenty-one million, three thousand, one hundred twenty-three".