12133210221 has 12 divisors (see below), whose sum is σ = 19118998080. Its totient is φ = 7353460680.

The previous prime is 12133210169. The next prime is 12133210241. The reversal of 12133210221 is 12201233121.

12133210221 is a `hidden beast` number, since 121 + 3 + 321 + 0 + 221 = 666.

It is not a de Polignac number, because 12133210221 - 2¹⁷ = 12133079149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12133210194 and 12133210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133210241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61278741 + ... + 61278938.

It is an arithmetic number, because the mean of its divisors is an integer number (1593249840).

Almost surely, 2^12133210221 is an apocalyptic number.

12133210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12133210221 is a deficient number, since it is larger than the sum of its proper divisors (6985787859).

12133210221 is a wasteful number, since it uses less digits than its factorization.

12133210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122557696 (or 122557693 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12133210221 its reverse (12201233121), we get a palindrome (24334443342).

The spelling of 12133210221 in words is "twelve billion, one hundred thirty-three million, two hundred ten thousand, two hundred twenty-one".