1321000204322 has 16 divisors (see below), whose sum is σ = 2024357398272. Its totient is φ = 646224092640.

The previous prime is 1321000204259. The next prime is 1321000204333. The reversal of 1321000204322 is 2234020001231.

It is a junction number, because it is equal to n+sod(n) for n = 1321000204294 and 1321000204303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147579 + ... + 2693342.

It is an arithmetic number, because the mean of its divisors is an integer number (126522337392).

Almost surely, 2^{1321000204322} is an apocalyptic number.

1321000204322 is a deficient number, since it is larger than the sum of its proper divisors (703357193950).

1321000204322 is a wasteful number, since it uses less digits than its factorization.

1321000204322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843873.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1321000204322 its reverse (2234020001231), we get a palindrome (3555020205553).

The spelling of 1321000204322 in words is "one trillion, three hundred twenty-one billion, two hundred four thousand, three hundred twenty-two".