12211212233 has 24 divisors (see below), whose sum is σ = 14133989856. Its totient is φ = 10459627200.

The previous prime is 12211212161. The next prime is 12211212257. The reversal of 12211212233 is 33221211221.

It is not a de Polignac number, because 12211212233 - 2¹⁶ = 12211146697 is a prime.

It is a super-2 number, since 2×12211212233² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211217233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374213 + ... + 405533.

It is an arithmetic number, because the mean of its divisors is an integer number (588916244).

Almost surely, 2^12211212233 is an apocalyptic number.

It is an amenable number.

12211212233 is a deficient number, since it is larger than the sum of its proper divisors (1922777623).

12211212233 is a wasteful number, since it uses less digits than its factorization.

12211212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31445 (or 31422 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 12211212233 its reverse (33221211221), we get a palindrome (45432423454).

The spelling of 12211212233 in words is "twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred thirty-three".