12021221233 has 8 divisors (see below), whose sum is σ = 13739606720. Its totient is φ = 10303102800.

The previous prime is 12021221231. The next prime is 12021221243. The reversal of 12021221233 is 33212212021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12021221233 - 2¹ = 12021221231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12021221233.

It is not an unprimeable number, because it can be changed into a prime (12021221231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41383 + ... + 160483.

It is an arithmetic number, because the mean of its divisors is an integer number (1717450840).

Almost surely, 2^12021221233 is an apocalyptic number.

It is an amenable number.

12021221233 is a deficient number, since it is larger than the sum of its proper divisors (1718385487).

12021221233 is a wasteful number, since it uses less digits than its factorization.

12021221233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133527.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12021221233 its reverse (33212212021), we get a palindrome (45233433254).

The spelling of 12021221233 in words is "twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred thirty-three".