1112021321 has 4 divisors (see below), whose sum is σ = 1130869200. Its totient is φ = 1093173444.

The previous prime is 1112021297. The next prime is 1112021359. The reversal of 1112021321 is 1231202111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1112021321 - 2¹⁸ = 1111759177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112021296 and 1112021305.

It is not an unprimeable number, because it can be changed into a prime (1112021021) 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, 9423851 + ... + 9423968.

It is an arithmetic number, because the mean of its divisors is an integer number (282717300).

Almost surely, 2^1112021321 is an apocalyptic number.

It is an amenable number.

1112021321 is a deficient number, since it is larger than the sum of its proper divisors (18847879).

1112021321 is an equidigital number, since it uses as much as digits as its factorization.

1112021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18847878.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1112021321 is about 33346.9836866845. The cubic root of 1112021321 is about 1036.0269148332.

Adding to 1112021321 its reverse (1231202111), we get a palindrome (2343223432).

The spelling of 1112021321 in words is "one billion, one hundred twelve million, twenty-one thousand, three hundred twenty-one".