2221131310313 has 4 divisors (see below), whose sum is σ = 2221163940228. Its totient is φ = 2221098680400.

The previous prime is 2221131310289. The next prime is 2221131310357. The reversal of 2221131310313 is 3130131311222.

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 235421951209 + 1985709359104 = 485203^2 + 1409152^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221131310313 - 2¹⁰ = 2221131309289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221131310373) 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, 16212638 + ... + 16349063.

It is an arithmetic number, because the mean of its divisors is an integer number (555290985057).

Almost surely, 2^{2221131310313} is an apocalyptic number.

It is an amenable number.

2221131310313 is a deficient number, since it is larger than the sum of its proper divisors (32629915).

2221131310313 is an equidigital number, since it uses as much as digits as its factorization.

2221131310313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32629914.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2221131310313 its reverse (3130131311222), we get a palindrome (5351262621535).

Subtracting 2221131310313 from its reverse (3130131311222), we obtain a palindrome (909000000909).

The spelling of 2221131310313 in words is "two trillion, two hundred twenty-one billion, one hundred thirty-one million, three hundred ten thousand, three hundred thirteen".