1120012021 has 4 divisors (see below), whose sum is σ = 1143842112. Its totient is φ = 1096181932.

The previous prime is 1120012001. The next prime is 1120012027. The reversal of 1120012021 is 1202100211.

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 1120012021 - 2⁹ = 1120011509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120011989 and 1120012007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120012027) 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, 11914975 + ... + 11915068.

It is an arithmetic number, because the mean of its divisors is an integer number (285960528).

Almost surely, 2^1120012021 is an apocalyptic number.

It is an amenable number.

1120012021 is a deficient number, since it is larger than the sum of its proper divisors (23830091).

1120012021 is an equidigital number, since it uses as much as digits as its factorization.

1120012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830090.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1120012021 is about 33466.5806589200. The cubic root of 1120012021 is about 1038.5025357719.

Adding to 1120012021 its reverse (1202100211), we get a palindrome (2322112232).

The spelling of 1120012021 in words is "one billion, one hundred twenty million, twelve thousand, twenty-one".