1121304611 has 4 divisors (see below), whose sum is σ = 1281490992. Its totient is φ = 961118232.

The previous prime is 1121304607. The next prime is 1121304619. The reversal of 1121304611 is 1164031211.

It is a happy number.

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 1121304611 - 2² = 1121304607 is a prime.

It is a super-2 number, since 2×1121304611² = 2514648061299722642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121304619) 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, 80093180 + ... + 80093193.

It is an arithmetic number, because the mean of its divisors is an integer number (320372748).

Almost surely, 2^1121304611 is an apocalyptic number.

1121304611 is a deficient number, since it is larger than the sum of its proper divisors (160186381).

1121304611 is an equidigital number, since it uses as much as digits as its factorization.

1121304611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160186380.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1121304611 is about 33485.8867435223. The cubic root of 1121304611 is about 1038.9018892013.

Adding to 1121304611 its reverse (1164031211), we get a palindrome (2285335822).

The spelling of 1121304611 in words is "one billion, one hundred twenty-one million, three hundred four thousand, six hundred eleven".