1112020321 has 4 divisors (see below), whose sum is σ = 1112091652. Its totient is φ = 1111948992.

The previous prime is 1112020309. The next prime is 1112020367. The reversal of 1112020321 is 1230202111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 444366400 + 667653921 = 21080^2 + 25839^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112020321 - 2⁷ = 1112020193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112020121) 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, 1140 + ... + 47173.

It is an arithmetic number, because the mean of its divisors is an integer number (278022913).

Almost surely, 2^1112020321 is an apocalyptic number.

It is an amenable number.

1112020321 is a deficient number, since it is larger than the sum of its proper divisors (71331).

1112020321 is an equidigital number, since it uses as much as digits as its factorization.

1112020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71330.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1112020321 is about 33346.9686928212. The cubic root of 1112020321 is about 1036.0266042795.

Adding to 1112020321 its reverse (1230202111), we get a palindrome (2342222432).

The spelling of 1112020321 in words is "one billion, one hundred twelve million, twenty thousand, three hundred twenty-one".