221241113 has 2 divisors, whose sum is σ = 221241114. Its totient is φ = 221241112.

The previous prime is 221241089. The next prime is 221241121. The reversal of 221241113 is 311142122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173396224 + 47844889 = 13168^2 + 6917^2 .

It is a cyclic number.

It is not a de Polignac number, because 221241113 - 2⁸ = 221240857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221241091 and 221241100.

It is not a weakly prime, because it can be changed into another prime (221241143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110620556 + 110620557.

It is an arithmetic number, because the mean of its divisors is an integer number (110620557).

Almost surely, 2^221241113 is an apocalyptic number.

It is an amenable number.

221241113 is a deficient number, since it is larger than the sum of its proper divisors (1).

221241113 is an equidigital number, since it uses as much as digits as its factorization.

221241113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 221241113 is about 14874.1760444066. The cubic root of 221241113 is about 604.8141523279.

Adding to 221241113 its reverse (311142122), we get a palindrome (532383235).

The spelling of 221241113 in words is "two hundred twenty-one million, two hundred forty-one thousand, one hundred thirteen".