1200011321 has 8 divisors (see below), whose sum is σ = 1203794784. Its totient is φ = 1196235040.

The previous prime is 1200011311. The next prime is 1200011341. The reversal of 1200011321 is 1231100021.

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 1200011321 - 2²² = 1195817017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200011311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598106 + ... + 600108.

It is an arithmetic number, because the mean of its divisors is an integer number (150474348).

Almost surely, 2^1200011321 is an apocalyptic number.

It is an amenable number.

1200011321 is a deficient number, since it is larger than the sum of its proper divisors (3783463).

1200011321 is an equidigital number, since it uses as much as digits as its factorization.

1200011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1200011321 is about 34641.1795555521. The cubic root of 1200011321 is about 1062.6619109381.

Adding to 1200011321 its reverse (1231100021), we get a palindrome (2431111342).

The spelling of 1200011321 in words is "one billion, two hundred million, eleven thousand, three hundred twenty-one".