2212331333221 has 4 divisors (see below), whose sum is σ = 2212598886700. Its totient is φ = 2212063779744.

The previous prime is 2212331333197. The next prime is 2212331333239. The reversal of 2212331333221 is 1223331332122.

It is a happy number.

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 1100371628196 + 1111959705025 = 1048986^2 + 1054495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212331333221 - 2¹¹ = 2212331331173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212331333221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212331333281) 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, 133764336 + ... + 133780873.

It is an arithmetic number, because the mean of its divisors is an integer number (553149721675).

Almost surely, 2^{2212331333221} is an apocalyptic number.

It is an amenable number.

2212331333221 is a deficient number, since it is larger than the sum of its proper divisors (267553479).

2212331333221 is an equidigital number, since it uses as much as digits as its factorization.

2212331333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267553478.

The product of its digits is 7776, while the sum is 28.

Adding to 2212331333221 its reverse (1223331332122), we get a palindrome (3435662665343).

The spelling of 2212331333221 in words is "two trillion, two hundred twelve billion, three hundred thirty-one million, three hundred thirty-three thousand, two hundred twenty-one".