1180012021 has 8 divisors (see below), whose sum is σ = 1212458688. Its totient is φ = 1147740000.

The previous prime is 1180012013. The next prime is 1180012037. The reversal of 1180012021 is 1202100811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1180012021 - 2³ = 1180012013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1180011986 and 1180012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29905 + ... + 57046.

It is an arithmetic number, because the mean of its divisors is an integer number (151557336).

Almost surely, 2^1180012021 is an apocalyptic number.

It is an amenable number.

1180012021 is a deficient number, since it is larger than the sum of its proper divisors (32446667).

1180012021 is an equidigital number, since it uses as much as digits as its factorization.

1180012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87323.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1180012021 is about 34351.3030466095. The cubic root of 1180012021 is about 1056.7253936230.

Adding to 1180012021 its reverse (1202100811), we get a palindrome (2382112832).

The spelling of 1180012021 in words is "one billion, one hundred eighty million, twelve thousand, twenty-one".