12021120223 has 32 divisors (see below), whose sum is σ = 15702543360. Its totient is φ = 8956147200.

The previous prime is 12021120187. The next prime is 12021120227. The reversal of 12021120223 is 32202112021.

It is a happy number.

It is not a de Polignac number, because 12021120223 - 2²⁵ = 11987565791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021120197 and 12021120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021120227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3648 + ... + 155098.

It is an arithmetic number, because the mean of its divisors is an integer number (490704480).

Almost surely, 2^12021120223 is an apocalyptic number.

12021120223 is a deficient number, since it is larger than the sum of its proper divisors (3681423137).

12021120223 is a wasteful number, since it uses less digits than its factorization.

12021120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151527.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12021120223 its reverse (32202112021), we get a palindrome (44223232244).

The spelling of 12021120223 in words is "twelve billion, twenty-one million, one hundred twenty thousand, two hundred twenty-three".