1135108721 has 2 divisors, whose sum is σ = 1135108722. Its totient is φ = 1135108720.

The previous prime is 1135108693. The next prime is 1135108727. The reversal of 1135108721 is 1278015311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1134948721 + 160000 = 33689^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135108721 - 2³⁰ = 61366897 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135108727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567554360 + 567554361.

It is an arithmetic number, because the mean of its divisors is an integer number (567554361).

Almost surely, 2^1135108721 is an apocalyptic number.

It is an amenable number.

1135108721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135108721 is an equidigital number, since it uses as much as digits as its factorization.

1135108721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1135108721 is about 33691.3745786663. The cubic root of 1135108721 is about 1043.1477367119.

The spelling of 1135108721 in words is "one billion, one hundred thirty-five million, one hundred eight thousand, seven hundred twenty-one".