321020220000 has 120 divisors (see below), whose sum is σ = 1053010722456. Its totient is φ = 85605376000.

The previous prime is 321020219959. The next prime is 321020220023. The reversal of 321020220000 is 22020123.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2615169 + ... + 2735168.

Almost surely, 2^321020220000 is an apocalyptic number.

321020220000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321020220000 is an abundant number, since it is smaller than the sum of its proper divisors (731990502456).

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

321020220000 is an equidigital number, since it uses as much as digits as its factorization.

321020220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350370 (or 5350347 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 321020220000 its reverse (22020123), we get a palindrome (321042240123).

The spelling of 321020220000 in words is "three hundred twenty-one billion, twenty million, two hundred twenty thousand".