12020211223 has 4 divisors (see below), whose sum is σ = 12217263928. Its totient is φ = 11823158520.

The previous prime is 12020211221. The next prime is 12020211227. The reversal of 12020211223 is 32211202021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32211202021 = 7451 ⋅4323071.

It is a cyclic number.

It is not a de Polignac number, because 12020211223 - 2¹ = 12020211221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020211197 and 12020211206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020211221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98526261 + ... + 98526382.

It is an arithmetic number, because the mean of its divisors is an integer number (3054315982).

Almost surely, 2^12020211223 is an apocalyptic number.

12020211223 is a deficient number, since it is larger than the sum of its proper divisors (197052705).

12020211223 is an equidigital number, since it uses as much as digits as its factorization.

12020211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197052704.

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

Adding to 12020211223 its reverse (32211202021), we get a palindrome (44231413244).

The spelling of 12020211223 in words is "twelve billion, twenty million, two hundred eleven thousand, two hundred twenty-three".