1121501153 has 4 divisors (see below), whose sum is σ = 1121881860. Its totient is φ = 1121120448.

The previous prime is 1121501149. The next prime is 1121501179. The reversal of 1121501153 is 3511051211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47169424 + 1074331729 = 6868^2 + 32777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121501153 - 2² = 1121501149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121501113) 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, 185900 + ... + 191837.

It is an arithmetic number, because the mean of its divisors is an integer number (280470465).

Almost surely, 2^1121501153 is an apocalyptic number.

It is an amenable number.

1121501153 is a deficient number, since it is larger than the sum of its proper divisors (380707).

1121501153 is an equidigital number, since it uses as much as digits as its factorization.

1121501153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380706.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1121501153 is about 33488.8213139848. The cubic root of 1121501153 is about 1038.9625851455.

Adding to 1121501153 its reverse (3511051211), we get a palindrome (4632552364).

The spelling of 1121501153 in words is "one billion, one hundred twenty-one million, five hundred one thousand, one hundred fifty-three".