1112586721 has 4 divisors (see below), whose sum is σ = 1112708500. Its totient is φ = 1112464944.

The previous prime is 1112586691. The next prime is 1112586737. The reversal of 1112586721 is 1276852111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1276852111 = 20357 ⋅62723.

It can be written as a sum of positive squares in 2 ways, for example, as 698016400 + 414570321 = 26420^2 + 20361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112586721 - 2¹⁷ = 1112455649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112586221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45966 + ... + 65863.

It is an arithmetic number, because the mean of its divisors is an integer number (278177125).

Almost surely, 2^1112586721 is an apocalyptic number.

It is an amenable number.

1112586721 is a deficient number, since it is larger than the sum of its proper divisors (121779).

1112586721 is an equidigital number, since it uses as much as digits as its factorization.

1112586721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121778.

The product of its digits is 6720, while the sum is 34.

The square root of 1112586721 is about 33355.4601377346. The cubic root of 1112586721 is about 1036.2024721293.

The spelling of 1112586721 in words is "one billion, one hundred twelve million, five hundred eighty-six thousand, seven hundred twenty-one".