1152171011 has 4 divisors (see below), whose sum is σ = 1152265392. Its totient is φ = 1152076632.

The previous prime is 1152170983. The next prime is 1152171029. The reversal of 1152171011 is 1101712511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1152171011 - 2¹⁸ = 1151908867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152171211) 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 3 ways as a sum of consecutive naturals, for example, 25580 + ... + 54393.

It is an arithmetic number, because the mean of its divisors is an integer number (288066348).

Almost surely, 2^1152171011 is an apocalyptic number.

1152171011 is a deficient number, since it is larger than the sum of its proper divisors (94381).

1152171011 is an equidigital number, since it uses as much as digits as its factorization.

1152171011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94380.

The product of its (nonzero) digits is 70, while the sum is 20.

The square root of 1152171011 is about 33943.6446334214. The cubic root of 1152171011 is about 1048.3484272937.

Adding to 1152171011 its reverse (1101712511), we get a palindrome (2253883522).

The spelling of 1152171011 in words is "one billion, one hundred fifty-two million, one hundred seventy-one thousand, eleven".