321420021320022 has 16 divisors (see below), whose sum is σ = 643019456593920. Its totient is φ = 107110104781032.

The previous prime is 321420021319981. The next prime is 321420021320113. The reversal of 321420021320022 is 220023120024123.

It is a junction number, because it is equal to n+sod(n) for n = 321420021319974 and 321420021320001.

It is a congruent number.

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, 7475558122 + ... + 7475601117.

It is an arithmetic number, because the mean of its divisors is an integer number (40188716037120).

Almost surely, 2^{321420021320022} is an apocalyptic number.

321420021320022 is an abundant number, since it is smaller than the sum of its proper divisors (321599435273898).

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

321420021320022 is a wasteful number, since it uses less digits than its factorization.

321420021320022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14951162827.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 321420021320022 its reverse (220023120024123), we get a palindrome (541443141344145).

The spelling of 321420021320022 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty-one million, three hundred twenty thousand, twenty-two".