12222133221 has 16 divisors (see below), whose sum is σ = 17259134400. Its totient is φ = 7666852608.

The previous prime is 12222133219. The next prime is 12222133229. The reversal of 12222133221 is 12233122221.

It is not a de Polignac number, because 12222133221 - 2¹ = 12222133219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222133229) 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, 189075 + ... + 245343.

It is an arithmetic number, because the mean of its divisors is an integer number (1078695900).

Almost surely, 2^12222133221 is an apocalyptic number.

It is an amenable number.

12222133221 is a deficient number, since it is larger than the sum of its proper divisors (5037001179).

12222133221 is a wasteful number, since it uses less digits than its factorization.

12222133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60548.

The product of its digits is 576, while the sum is 21.

Adding to 12222133221 its reverse (12233122221), we get a palindrome (24455255442).

The spelling of 12222133221 in words is "twelve billion, two hundred twenty-two million, one hundred thirty-three thousand, two hundred twenty-one".