2221311330021 has 8 divisors (see below), whose sum is σ = 3384855360064. Its totient is φ = 1269320760000.

The previous prime is 2221311330011. The next prime is 2221311330059. The reversal of 2221311330021 is 1200331131222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221311330021 - 2¹⁰ = 2221311328997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 105776730001 = 2221311330021 / (2 + 2 + 2 + 1 + 3 + 1 + 1 + 3 + 3 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221311330021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221311330011) 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 7 ways as a sum of consecutive naturals, for example, 52888364980 + ... + 52888365021.

It is an arithmetic number, because the mean of its divisors is an integer number (423106920008).

Almost surely, 2^{2221311330021} is an apocalyptic number.

2221311330021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2221311330021 is a deficient number, since it is larger than the sum of its proper divisors (1163544030043).

2221311330021 is a wasteful number, since it uses less digits than its factorization.

2221311330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105776730011.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2221311330021 its reverse (1200331131222), we get a palindrome (3421642461243).

The spelling of 2221311330021 in words is "two trillion, two hundred twenty-one billion, three hundred eleven million, three hundred thirty thousand, twenty-one".