2221331113 has 2 divisors, whose sum is σ = 2221331114. Its totient is φ = 2221331112.

The previous prime is 2221331111. The next prime is 2221331117. The reversal of 2221331113 is 3111331222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1460233369 + 761097744 = 38213^2 + 27588^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221331113 - 2¹ = 2221331111 is a prime.

Together with 2221331111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2221331111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110665556 + 1110665557.

It is an arithmetic number, because the mean of its divisors is an integer number (1110665557).

Almost surely, 2^2221331113 is an apocalyptic number.

It is an amenable number.

2221331113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221331113 is an equidigital number, since it uses as much as digits as its factorization.

2221331113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 2221331113 is about 47130.9994907810. Note that the first 3 decimals coincide. The cubic root of 2221331113 is about 1304.7814283362.

Adding to 2221331113 its reverse (3111331222), we get a palindrome (5332662335).

The spelling of 2221331113 in words is "two billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred thirteen".