12212221333 has 16 divisors (see below), whose sum is σ = 13376588400. Its totient is φ = 11081558016.

The previous prime is 12212221327. The next prime is 12212221391. The reversal of 12212221333 is 33312221221.

It can be written as a sum of positive squares in 8 ways, for example, as 4542490404 + 7669730929 = 67398^2 + 87577^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212221333 - 2³³ = 3622286741 is a prime.

It is a super-4 number, since 4×12212221333⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212224333) 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, 155391 + ... + 220387.

It is an arithmetic number, because the mean of its divisors is an integer number (836036775).

Almost surely, 2^12212221333 is an apocalyptic number.

12212221333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12212221333 is a deficient number, since it is larger than the sum of its proper divisors (1164367067).

12212221333 is a wasteful number, since it uses less digits than its factorization.

12212221333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65256.

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

Adding to 12212221333 its reverse (33312221221), we get a palindrome (45524442554).

The spelling of 12212221333 in words is "twelve billion, two hundred twelve million, two hundred twenty-one thousand, three hundred thirty-three".