1135121451 has 32 divisors (see below), whose sum is σ = 1633228800. Its totient is φ = 699632640.

The previous prime is 1135121443. The next prime is 1135121521. The reversal of 1135121451 is 1541215311.

It is not a de Polignac number, because 1135121451 - 2³ = 1135121443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1135121401) 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 in 31 ways as a sum of consecutive naturals, for example, 259440 + ... + 263778.

It is an arithmetic number, because the mean of its divisors is an integer number (51038400).

Almost surely, 2^1135121451 is an apocalyptic number.

1135121451 is a deficient number, since it is larger than the sum of its proper divisors (498107349).

1135121451 is a wasteful number, since it uses less digits than its factorization.

1135121451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499.

The product of its digits is 600, while the sum is 24.

The square root of 1135121451 is about 33691.5634988939. The cubic root of 1135121451 is about 1043.1516362564.

Adding to 1135121451 its reverse (1541215311), we get a palindrome (2676336762).

The spelling of 1135121451 in words is "one billion, one hundred thirty-five million, one hundred twenty-one thousand, four hundred fifty-one".