1121353163 has 4 divisors (see below), whose sum is σ = 1281546480. Its totient is φ = 961159848.

The previous prime is 1121353141. The next prime is 1121353187. The reversal of 1121353163 is 3613531211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3613531211 = 1049 ⋅3444739.

It is a cyclic number.

It is not a de Polignac number, because 1121353163 - 2¹⁰ = 1121352139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121353663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80096648 + ... + 80096661.

It is an arithmetic number, because the mean of its divisors is an integer number (320386620).

Almost surely, 2^1121353163 is an apocalyptic number.

1121353163 is a deficient number, since it is larger than the sum of its proper divisors (160193317).

1121353163 is an equidigital number, since it uses as much as digits as its factorization.

1121353163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160193316.

The product of its digits is 1620, while the sum is 26.

The square root of 1121353163 is about 33486.6116978114. The cubic root of 1121353163 is about 1038.9168836510.

Adding to 1121353163 its reverse (3613531211), we get a palindrome (4734884374).

The spelling of 1121353163 in words is "one billion, one hundred twenty-one million, three hundred fifty-three thousand, one hundred sixty-three".