1130640221 has 2 divisors, whose sum is σ = 1130640222. Its totient is φ = 1130640220.

The previous prime is 1130640143. The next prime is 1130640229. The reversal of 1130640221 is 1220460311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129699321 + 940900 = 33611^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130640221 - 2³⁰ = 56898397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1130640193 and 1130640202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130640229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565320110 + 565320111.

It is an arithmetic number, because the mean of its divisors is an integer number (565320111).

Almost surely, 2^1130640221 is an apocalyptic number.

It is an amenable number.

1130640221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130640221 is an equidigital number, since it uses as much as digits as its factorization.

1130640221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1130640221 is about 33624.9939925645. The cubic root of 1130640221 is about 1041.7771086257. Note that the first 3 decimals are identical.

The spelling of 1130640221 in words is "one billion, one hundred thirty million, six hundred forty thousand, two hundred twenty-one".