12213121233 has 16 divisors (see below), whose sum is σ = 17002935936. Its totient is φ = 7783142400.

The previous prime is 12213121231. The next prime is 12213121241. The reversal of 12213121233 is 33212131221.

It is not a de Polignac number, because 12213121233 - 2¹ = 12213121231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12213121231) 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, 55191 + ... + 165747.

It is an arithmetic number, because the mean of its divisors is an integer number (1062683496).

Almost surely, 2^12213121233 is an apocalyptic number.

It is an amenable number.

12213121233 is a deficient number, since it is larger than the sum of its proper divisors (4789814703).

12213121233 is a wasteful number, since it uses less digits than its factorization.

12213121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112184.

The product of its digits is 432, while the sum is 21.

Adding to 12213121233 its reverse (33212131221), we get a palindrome (45425252454).

The spelling of 12213121233 in words is "twelve billion, two hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-three".