321420033020020 has 48 divisors (see below), whose sum is σ = 756245266898688. Its totient is φ = 113721092760960.

The previous prime is 321420033020017. The next prime is 321420033020143. The reversal of 321420033020020 is 20020330024123.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 321420033019973 and 321420033020000.

It is a congruent number.

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, 19743237132 + ... + 19743253411.

It is an arithmetic number, because the mean of its divisors is an integer number (15755109727056).

Almost surely, 2^{321420033020020} is an apocalyptic number.

It is an amenable number.

321420033020020 is an abundant number, since it is smaller than the sum of its proper divisors (434825233878668).

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

321420033020020 is a wasteful number, since it uses less digits than its factorization.

321420033020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39486490600 (or 39486490598 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 321420033020020 its reverse (20020330024123), we get a palindrome (341440363044143).

The spelling of 321420033020020 in words is "three hundred twenty-one trillion, four hundred twenty billion, thirty-three million, twenty thousand, twenty".