321220121022102 has 32 divisors (see below), whose sum is σ = 676406686118400. Its totient is φ = 101414862991008.

The previous prime is 321220121022037. The next prime is 321220121022169. The reversal of 321220121022102 is 201220121022123.

It is a super-2 number, since 2×321220121022102² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319912702 + ... + 320915217.

It is an arithmetic number, because the mean of its divisors is an integer number (21137708941200).

Almost surely, 2^{321220121022102} is an apocalyptic number.

321220121022102 is an abundant number, since it is smaller than the sum of its proper divisors (355186565096298).

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

321220121022102 is a wasteful number, since it uses less digits than its factorization.

321220121022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640832340.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 321220121022102 its sum of digits (21), we get a palindrome (321220121022123).

Adding to 321220121022102 its reverse (201220121022123), we get a palindrome (522440242044225).

The spelling of 321220121022102 in words is "three hundred twenty-one trillion, two hundred twenty billion, one hundred twenty-one million, twenty-two thousand, one hundred two".