12221232133 has 4 divisors (see below), whose sum is σ = 13332253248. Its totient is φ = 11110211020.

The previous prime is 12221232097. The next prime is 12221232197. The reversal of 12221232133 is 33123212221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12221232133 - 2¹³ = 12221223941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221232433) 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, 555510541 + ... + 555510562.

It is an arithmetic number, because the mean of its divisors is an integer number (3333063312).

Almost surely, 2^12221232133 is an apocalyptic number.

It is an amenable number.

12221232133 is a deficient number, since it is larger than the sum of its proper divisors (1111021115).

12221232133 is a wasteful number, since it uses less digits than its factorization.

12221232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111021114.

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

Adding to 12221232133 its reverse (33123212221), we get a palindrome (45344444354).

The spelling of 12221232133 in words is "twelve billion, two hundred twenty-one million, two hundred thirty-two thousand, one hundred thirty-three".