1021321320322 has 16 divisors (see below), whose sum is σ = 1557984093120. Its totient is φ = 502064626032.

The previous prime is 1021321320301. The next prime is 1021321320347. The reversal of 1021321320322 is 2230231231201.

It is a junction number, because it is equal to n+sod(n) for n = 1021321320293 and 1021321320302.

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, 17805433 + ... + 17862700.

It is an arithmetic number, because the mean of its divisors is an integer number (97374005820).

Almost surely, 2^{1021321320322} is an apocalyptic number.

1021321320322 is a deficient number, since it is larger than the sum of its proper divisors (536662772798).

1021321320322 is a wasteful number, since it uses less digits than its factorization.

1021321320322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35668377.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1021321320322 its reverse (2230231231201), we get a palindrome (3251552551523).

The spelling of 1021321320322 in words is "one trillion, twenty-one billion, three hundred twenty-one million, three hundred twenty thousand, three hundred twenty-two".