12121323003 has 40 divisors (see below), whose sum is σ = 18265643088. Its totient is φ = 8010415296.

The previous prime is 12121322987. The next prime is 12121323007. The reversal of 12121323003 is 30032312121.

It is not a de Polignac number, because 12121323003 - 2⁴ = 12121322987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121323007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7158825 + ... + 7160517.

Almost surely, 2^12121323003 is an apocalyptic number.

12121323003 is a deficient number, since it is larger than the sum of its proper divisors (6144320085).

12121323003 is a wasteful number, since it uses less digits than its factorization.

12121323003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425 (or 2416 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12121323003 its reverse (30032312121), we get a palindrome (42153635124).

The spelling of 12121323003 in words is "twelve billion, one hundred twenty-one million, three hundred twenty-three thousand, three".