321220022122 has 8 divisors (see below), whose sum is σ = 489728886372. Its totient is φ = 157977060000.

The previous prime is 321220022093. The next prime is 321220022173. The reversal of 321220022122 is 221220022123.

It can be written as a sum of positive squares in 2 ways, for example, as 239247178641 + 81972843481 = 489129^2 + 286309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×321220022122² (a number of 24 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 321220022122.

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 3 ways as a sum of consecutive naturals, for example, 1316475379 + ... + 1316475622.

Almost surely, 2^321220022122 is an apocalyptic number.

321220022122 is a deficient number, since it is larger than the sum of its proper divisors (168508864250).

321220022122 is a wasteful number, since it uses less digits than its factorization.

321220022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632951064.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 321220022122 its reverse (221220022123), we get a palindrome (542440044245).

Subtracting from 321220022122 its reverse (221220022123), we obtain a palindrome (99999999999).

The spelling of 321220022122 in words is "three hundred twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred twenty-two".