1013221289 has 2 divisors, whose sum is σ = 1013221290. Its totient is φ = 1013221288.

The previous prime is 1013221259. The next prime is 1013221331. The reversal of 1013221289 is 9821223101.

1013221289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954315664 + 58905625 = 30892^2 + 7675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013221289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1013221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506610644 + 506610645.

It is an arithmetic number, because the mean of its divisors is an integer number (506610645).

Almost surely, 2^1013221289 is an apocalyptic number.

It is an amenable number.

1013221289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013221289 is an equidigital number, since it uses as much as digits as its factorization.

1013221289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1013221289 is about 31831.1370987591. The cubic root of 1013221289 is about 1004.3878152512.

The spelling of 1013221289 in words is "one billion, thirteen million, two hundred twenty-one thousand, two hundred eighty-nine".