1001003222320 has 20 divisors (see below), whose sum is σ = 2327332492080. Its totient is φ = 400401288896.

The previous prime is 1001003222203. The next prime is 1001003222333. The reversal of 1001003222320 is 232223001001.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1001003222294 and 1001003222303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6256270060 + ... + 6256270219.

It is an arithmetic number, because the mean of its divisors is an integer number (116366624604).

Almost surely, 2^{1001003222320} is an apocalyptic number.

1001003222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001003222320 is an abundant number, since it is smaller than the sum of its proper divisors (1326329269760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001003222320 is a wasteful number, since it uses less digits than its factorization.

1001003222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512540292 (or 12512540286 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1001003222320 its reverse (232223001001), we get a palindrome (1233226223321).

The spelling of 1001003222320 in words is "one trillion, one billion, three million, two hundred twenty-two thousand, three hundred twenty".