2221120231243 has 2 divisors, whose sum is σ = 2221120231244. Its totient is φ = 2221120231242.

The previous prime is 2221120231217. The next prime is 2221120231349. The reversal of 2221120231243 is 3421320211222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221120231243 - 2²¹ = 2221118134091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221120231543) 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 as a sum of consecutive naturals, namely, 1110560115621 + 1110560115622.

It is an arithmetic number, because the mean of its divisors is an integer number (1110560115622).

Almost surely, 2^{2221120231243} is an apocalyptic number.

2221120231243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221120231243 is an equidigital number, since it uses as much as digits as its factorization.

2221120231243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2221120231243 its reverse (3421320211222), we get a palindrome (5642440442465).

The spelling of 2221120231243 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, two hundred thirty-one thousand, two hundred forty-three".