12213212213233 has 4 divisors (see below), whose sum is σ = 12511095437988. Its totient is φ = 11915328988480.

The previous prime is 12213212213183. The next prime is 12213212213261. The reversal of 12213212213233 is 33231221231221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5448807095824 + 6764405117409 = 2334268^2 + 2600847^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213212213233 - 2¹⁷ = 12213212082161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213212213273) 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, 148941612316 + ... + 148941612397.

It is an arithmetic number, because the mean of its divisors is an integer number (3127773859497).

Almost surely, 2^{12213212213233} is an apocalyptic number.

It is an amenable number.

12213212213233 is a deficient number, since it is larger than the sum of its proper divisors (297883224755).

12213212213233 is an equidigital number, since it uses as much as digits as its factorization.

12213212213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297883224754.

The product of its digits is 5184, while the sum is 28.

Adding to 12213212213233 its reverse (33231221231221), we get a palindrome (45444433444454).

The spelling of 12213212213233 in words is "twelve trillion, two hundred thirteen billion, two hundred twelve million, two hundred thirteen thousand, two hundred thirty-three".