1320203221203 has 32 divisors (see below), whose sum is σ = 1824455324160. Its totient is φ = 848161117440.

The previous prime is 1320203221189. The next prime is 1320203221213. The reversal of 1320203221203 is 3021223020231.

It is a happy number.

It is not a de Polignac number, because 1320203221203 - 2³³ = 1311613286611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320203221203.

It is not an unprimeable number, because it can be changed into a prime (1320203221213) 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, 106539138 + ... + 106551528.

It is an arithmetic number, because the mean of its divisors is an integer number (57014228880).

Almost surely, 2^{1320203221203} is an apocalyptic number.

1320203221203 is a deficient number, since it is larger than the sum of its proper divisors (504252102957).

1320203221203 is a wasteful number, since it uses less digits than its factorization.

1320203221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14667.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1320203221203 its reverse (3021223020231), we get a palindrome (4341426241434).

The spelling of 1320203221203 in words is "one trillion, three hundred twenty billion, two hundred three million, two hundred twenty-one thousand, two hundred three".