1121320211 has 16 divisors (see below), whose sum is σ = 1241395200. Its totient is φ = 1004381280.

The previous prime is 1121320199. The next prime is 1121320237. The reversal of 1121320211 is 1120231211.

It is a cyclic number.

It is not a de Polignac number, because 1121320211 - 2⁶ = 1121320147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121323211) 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 15 ways as a sum of consecutive naturals, for example, 205460 + ... + 210846.

It is an arithmetic number, because the mean of its divisors is an integer number (77587200).

Almost surely, 2^1121320211 is an apocalyptic number.

1121320211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121320211 is a deficient number, since it is larger than the sum of its proper divisors (120074989).

1121320211 is a wasteful number, since it uses less digits than its factorization.

1121320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1121320211 is about 33486.1196766660. The cubic root of 1121320211 is about 1038.9067070401.

Adding to 1121320211 its reverse (1120231211), we get a palindrome (2241551422).

The spelling of 1121320211 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, two hundred eleven".