12000233321221 has 4 divisors (see below), whose sum is σ = 12000269748844. Its totient is φ = 12000196893600.

The previous prime is 12000233321213. The next prime is 12000233321249. The reversal of 12000233321221 is 12212333200021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4860724137025 + 7139509184196 = 2204705^2 + 2671986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000233321221 - 2³ = 12000233321213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000233321192 and 12000233321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000233321821) 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, 17715120 + ... + 18380041.

It is an arithmetic number, because the mean of its divisors is an integer number (3000067437211).

Almost surely, 2^{12000233321221} is an apocalyptic number.

It is an amenable number.

12000233321221 is a deficient number, since it is larger than the sum of its proper divisors (36427623).

12000233321221 is an equidigital number, since it uses as much as digits as its factorization.

12000233321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36427622.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12000233321221 its reverse (12212333200021), we get a palindrome (24212566521242).

The spelling of 12000233321221 in words is "twelve trillion, two hundred thirty-three million, three hundred twenty-one thousand, two hundred twenty-one".