1121235611 has 4 divisors (see below), whose sum is σ = 1121365992. Its totient is φ = 1121105232.

The previous prime is 1121235601. The next prime is 1121235631. The reversal of 1121235611 is 1165321211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121235611 - 2²⁶ = 1054126747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121235601) 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, 51305 + ... + 69818.

It is an arithmetic number, because the mean of its divisors is an integer number (280341498).

Almost surely, 2^1121235611 is an apocalyptic number.

1121235611 is a deficient number, since it is larger than the sum of its proper divisors (130381).

1121235611 is an equidigital number, since it uses as much as digits as its factorization.

1121235611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130380.

The product of its digits is 360, while the sum is 23.

The square root of 1121235611 is about 33484.8564428758. The cubic root of 1121235611 is about 1038.8805789941.

Adding to 1121235611 its reverse (1165321211), we get a palindrome (2286556822).

The spelling of 1121235611 in words is "one billion, one hundred twenty-one million, two hundred thirty-five thousand, six hundred eleven".