2221311221033 has 4 divisors (see below), whose sum is σ = 2221320064980. Its totient is φ = 2221302377088.

The previous prime is 2221311221009. The next prime is 2221311221047. The reversal of 2221311221033 is 3301221131222.

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 1420549329424 + 800761891609 = 1191868^2 + 894853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221311221033 - 2¹² = 2221311216937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221311221093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4033868 + ... + 4551341.

It is an arithmetic number, because the mean of its divisors is an integer number (555330016245).

Almost surely, 2^{2221311221033} is an apocalyptic number.

It is an amenable number.

2221311221033 is a deficient number, since it is larger than the sum of its proper divisors (8843947).

2221311221033 is an equidigital number, since it uses as much as digits as its factorization.

2221311221033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843946.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2221311221033 its reverse (3301221131222), we get a palindrome (5522532352255).

The spelling of 2221311221033 in words is "two trillion, two hundred twenty-one billion, three hundred eleven million, two hundred twenty-one thousand, thirty-three".