1321320130203 has 32 divisors (see below), whose sum is σ = 1824784448256. Its totient is φ = 849872959488.

The previous prime is 1321320130187. The next prime is 1321320130223. The reversal of 1321320130203 is 3020310231231.

It is not a de Polignac number, because 1321320130203 - 2⁴ = 1321320130187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321320130203.

It is not an unprimeable number, because it can be changed into a prime (1321320130223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99964651 + ... + 99977867.

It is an arithmetic number, because the mean of its divisors is an integer number (57024514008).

Almost surely, 2^{1321320130203} is an apocalyptic number.

1321320130203 is a deficient number, since it is larger than the sum of its proper divisors (503464318053).

1321320130203 is a wasteful number, since it uses less digits than its factorization.

1321320130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22683.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1321320130203 its reverse (3020310231231), we get a palindrome (4341630361434).

The spelling of 1321320130203 in words is "one trillion, three hundred twenty-one billion, three hundred twenty million, one hundred thirty thousand, two hundred three".