10320321220 has 48 divisors (see below), whose sum is σ = 23655240000. Its totient is φ = 3750888320.

The previous prime is 10320321203. The next prime is 10320321239. The reversal of 10320321220 is 2212302301.

It is a junction number, because it is equal to n+sod(n) for n = 10320321194 and 10320321203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450606 + ... + 472954.

It is an arithmetic number, because the mean of its divisors is an integer number (492817500).

Almost surely, 2^10320321220 is an apocalyptic number.

10320321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10320321220 is an abundant number, since it is smaller than the sum of its proper divisors (13334918780).

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

10320321220 is a wasteful number, since it uses less digits than its factorization.

10320321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24468 (or 24466 counting only the distinct ones).

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

Adding to 10320321220 its reverse (2212302301), we get a palindrome (12532623521).

The spelling of 10320321220 in words is "ten billion, three hundred twenty million, three hundred twenty-one thousand, two hundred twenty".