1320003211 has 4 divisors (see below), whose sum is σ = 1320108552. Its totient is φ = 1319897872.

The previous prime is 1320003197. The next prime is 1320003221. The reversal of 1320003211 is 1123000231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1123000231 = 23 ⋅48826097.

It is a cyclic number.

It is not a de Polignac number, because 1320003211 - 2¹⁷ = 1319872139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320003191 and 1320003200.

It is not an unprimeable number, because it can be changed into a prime (1320003221) 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 3 ways as a sum of consecutive naturals, for example, 30865 + ... + 59938.

It is an arithmetic number, because the mean of its divisors is an integer number (330027138).

Almost surely, 2^1320003211 is an apocalyptic number.

1320003211 is a deficient number, since it is larger than the sum of its proper divisors (105341).

1320003211 is an equidigital number, since it uses as much as digits as its factorization.

1320003211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105340.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1320003211 is about 36331.8484390761. The cubic root of 1320003211 is about 1096.9621999663.

Adding to 1320003211 its reverse (1123000231), we get a palindrome (2443003442).

The spelling of 1320003211 in words is "one billion, three hundred twenty million, three thousand, two hundred eleven".