1150221131 has 4 divisors (see below), whose sum is σ = 1150325352. Its totient is φ = 1150116912.

The previous prime is 1150221089. The next prime is 1150221143. The reversal of 1150221131 is 1311220511.

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 1150221131 - 2⁶ = 1150221067 is a prime.

It is a super-2 number, since 2×1150221131² = 2646017300397838322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150221151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33290 + ... + 58383.

It is an arithmetic number, because the mean of its divisors is an integer number (287581338).

Almost surely, 2^1150221131 is an apocalyptic number.

1150221131 is a deficient number, since it is larger than the sum of its proper divisors (104221).

1150221131 is an equidigital number, since it uses as much as digits as its factorization.

1150221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104220.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1150221131 is about 33914.9101576283. The cubic root of 1150221131 is about 1047.7567015168.

Adding to 1150221131 its reverse (1311220511), we get a palindrome (2461441642).

The spelling of 1150221131 in words is "one billion, one hundred fifty million, two hundred twenty-one thousand, one hundred thirty-one".