12133102221 has 12 divisors (see below), whose sum is σ = 17856264348. Its totient is φ = 7936116864.

The previous prime is 12133102193. The next prime is 12133102279. The reversal of 12133102221 is 12220133121.

It can be written as a sum of positive squares in 2 ways, for example, as 6182676900 + 5950425321 = 78630^2 + 77139^2 .

It is not a de Polignac number, because 12133102221 - 2⁹ = 12133101709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12133102194 and 12133102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133102291) 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, 12717660 + ... + 12718613.

It is an arithmetic number, because the mean of its divisors is an integer number (1488022029).

Almost surely, 2^12133102221 is an apocalyptic number.

It is an amenable number.

12133102221 is a deficient number, since it is larger than the sum of its proper divisors (5723162127).

12133102221 is a wasteful number, since it uses less digits than its factorization.

12133102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25436332 (or 25436329 counting only the distinct ones).

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

Adding to 12133102221 its reverse (12220133121), we get a palindrome (24353235342).

The spelling of 12133102221 in words is "twelve billion, one hundred thirty-three million, one hundred two thousand, two hundred twenty-one".