1112611121 has 4 divisors (see below), whose sum is σ = 1178058852. Its totient is φ = 1047163392.

The previous prime is 1112611103. The next prime is 1112611133. The reversal of 1112611121 is 1211162111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1211162111 = 109 ⋅11111579.

It can be written as a sum of positive squares in 2 ways, for example, as 609102400 + 503508721 = 24680^2 + 22439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112611121 - 2³⁰ = 38869297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 65447713 = 1112611121 / (1 + 1 + 1 + 2 + 6 + 1 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112611121.

It is not an unprimeable number, because it can be changed into a prime (1112611151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32723840 + ... + 32723873.

It is an arithmetic number, because the mean of its divisors is an integer number (294514713).

Almost surely, 2^1112611121 is an apocalyptic number.

It is an amenable number.

1112611121 is a deficient number, since it is larger than the sum of its proper divisors (65447731).

1112611121 is an equidigital number, since it uses as much as digits as its factorization.

1112611121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65447730.

The product of its digits is 24, while the sum is 17.

The square root of 1112611121 is about 33355.8258929381. The cubic root of 1112611121 is about 1036.2100470161.

Adding to 1112611121 its reverse (1211162111), we get a palindrome (2323773232).

The spelling of 1112611121 in words is "one billion, one hundred twelve million, six hundred eleven thousand, one hundred twenty-one".