2221302313231 has 4 divisors (see below), whose sum is σ = 2221311916152. Its totient is φ = 2221292710312.

The previous prime is 2221302313229. The next prime is 2221302313249. The reversal of 2221302313231 is 1323132031222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221302313231 - 2¹ = 2221302313229 is a prime.

It is a super-2 number, since 2×2221302313231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221302313196 and 2221302313205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221300313231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4445701 + ... + 4920046.

It is an arithmetic number, because the mean of its divisors is an integer number (555327979038).

Almost surely, 2^{2221302313231} is an apocalyptic number.

2221302313231 is a deficient number, since it is larger than the sum of its proper divisors (9602921).

2221302313231 is an equidigital number, since it uses as much as digits as its factorization.

2221302313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602920.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2221302313231 its reverse (1323132031222), we get a palindrome (3544434344453).

The spelling of 2221302313231 in words is "two trillion, two hundred twenty-one billion, three hundred two million, three hundred thirteen thousand, two hundred thirty-one".