1130331221 has 2 divisors, whose sum is σ = 1130331222. Its totient is φ = 1130331220.

The previous prime is 1130331179. The next prime is 1130331229. The reversal of 1130331221 is 1221330311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122987121 + 7344100 = 33511^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130331221 - 2¹⁴ = 1130314837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1130331221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130331229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565165610 + 565165611.

It is an arithmetic number, because the mean of its divisors is an integer number (565165611).

Almost surely, 2^1130331221 is an apocalyptic number.

It is an amenable number.

1130331221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130331221 is an equidigital number, since it uses as much as digits as its factorization.

1130331221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1130331221 is about 33620.3988822262. The cubic root of 1130331221 is about 1041.6821953042.

Adding to 1130331221 its reverse (1221330311), we get a palindrome (2351661532).

It can be divided in two parts, 11303 and 31221, that added together give a palindrome (42524).

The spelling of 1130331221 in words is "one billion, one hundred thirty million, three hundred thirty-one thousand, two hundred twenty-one".