12021123001223 has 4 divisors (see below), whose sum is σ = 13738426287120. Its totient is φ = 10303819715328.

The previous prime is 12021123001219. The next prime is 12021123001241. The reversal of 12021123001223 is 32210032112021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12021123001223 - 2² = 12021123001219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021123001195 and 12021123001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021123001273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858651642938 + ... + 858651642951.

It is an arithmetic number, because the mean of its divisors is an integer number (3434606571780).

Almost surely, 2^{12021123001223} is an apocalyptic number.

12021123001223 is a deficient number, since it is larger than the sum of its proper divisors (1717303285897).

12021123001223 is an equidigital number, since it uses as much as digits as its factorization.

12021123001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717303285896.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12021123001223 its reverse (32210032112021), we get a palindrome (44231155113244).

The spelling of 12021123001223 in words is "twelve trillion, twenty-one billion, one hundred twenty-three million, one thousand, two hundred twenty-three".