1113233221 has 2 divisors, whose sum is σ = 1113233222. Its totient is φ = 1113233220.

The previous prime is 1113233213. The next prime is 1113233227. The reversal of 1113233221 is 1223323111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755645121 + 357588100 = 27489^2 + 18910^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113233221 - 2³ = 1113233213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113233227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556616610 + 556616611.

It is an arithmetic number, because the mean of its divisors is an integer number (556616611).

Almost surely, 2^1113233221 is an apocalyptic number.

It is an amenable number.

1113233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113233221 is an equidigital number, since it uses as much as digits as its factorization.

1113233221 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 1113233221 is about 33365.1497973559. The cubic root of 1113233221 is about 1036.4031381902.

Adding to 1113233221 its reverse (1223323111), we get a palindrome (2336556332).

The spelling of 1113233221 in words is "one billion, one hundred thirteen million, two hundred thirty-three thousand, two hundred twenty-one".