12021220233 has 16 divisors (see below), whose sum is σ = 19428235200. Its totient is φ = 7285587840.

The previous prime is 12021220229. The next prime is 12021220241. The reversal of 12021220233 is 33202212021.

It is not a de Polignac number, because 12021220233 - 2² = 12021220229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021220933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20237448 + ... + 20238041.

It is an arithmetic number, because the mean of its divisors is an integer number (1214264700).

Almost surely, 2^12021220233 is an apocalyptic number.

It is an amenable number.

12021220233 is a deficient number, since it is larger than the sum of its proper divisors (7407014967).

12021220233 is a wasteful number, since it uses less digits than its factorization.

12021220233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40475509 (or 40475503 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12021220233 its reverse (33202212021), we get a palindrome (45223432254).

The spelling of 12021220233 in words is "twelve billion, twenty-one million, two hundred twenty thousand, two hundred thirty-three".