12021123003123 has 64 divisors (see below), whose sum is σ = 17533033394688. Its totient is φ = 7281500728320.

The previous prime is 12021123003089. The next prime is 12021123003179. The reversal of 12021123003123 is 32130032112021.

It is not a de Polignac number, because 12021123003123 - 2²⁰ = 12021121954547 is a prime.

It is a super-3 number, since 3×12021123003123³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12021123003123.

It is not an unprimeable number, because it can be changed into a prime (12021123003823) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3992400688 + ... + 3992403698.

It is an arithmetic number, because the mean of its divisors is an integer number (273953646792).

Almost surely, 2^{12021123003123} is an apocalyptic number.

12021123003123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12021123003123 is a deficient number, since it is larger than the sum of its proper divisors (5511910391565).

12021123003123 is a wasteful number, since it uses less digits than its factorization.

12021123003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12021123003123 its reverse (32130032112021), we get a palindrome (44151155115144).

The spelling of 12021123003123 in words is "twelve trillion, twenty-one billion, one hundred twenty-three million, three thousand, one hundred twenty-three".