321420300043220 has 192 divisors, whose sum is σ = 799482507264000. Its totient is φ = 106204802296320.

The previous prime is 321420300043201. The next prime is 321420300043237. The reversal of 321420300043220 is 22340003024123.

It is a super-2 number, since 2×321420300043220² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321420300043220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23422007279 + ... + 23422021001.

It is an arithmetic number, because the mean of its divisors is an integer number (4163971392000).

Almost surely, 2^{321420300043220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321420300043220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399741253632000).

321420300043220 is an abundant number, since it is smaller than the sum of its proper divisors (478062207220780).

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

321420300043220 is a wasteful number, since it uses less digits than its factorization.

321420300043220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23998 (or 23996 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 321420300043220 its reverse (22340003024123), we get a palindrome (343760303067343).

The spelling of 321420300043220 in words is "three hundred twenty-one trillion, four hundred twenty billion, three hundred million, forty-three thousand, two hundred twenty".