22221212233 has 4 divisors (see below), whose sum is σ = 24241322448. Its totient is φ = 20201102020.

The previous prime is 22221212231. The next prime is 22221212243. The reversal of 22221212233 is 33221212222.

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 not a de Polignac number, because 22221212233 - 2¹ = 22221212231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010055091 + ... + 1010055112.

It is an arithmetic number, because the mean of its divisors is an integer number (6060330612).

Almost surely, 2^22221212233 is an apocalyptic number.

It is an amenable number.

22221212233 is a deficient number, since it is larger than the sum of its proper divisors (2020110215).

22221212233 is a wasteful number, since it uses less digits than its factorization.

22221212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020110214.

The product of its digits is 1152, while the sum is 22.

Adding to 22221212233 its reverse (33221212222), we get a palindrome (55442424455).

The spelling of 22221212233 in words is "twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, two hundred thirty-three".