321220122 has 16 divisors (see below), whose sum is σ = 647345952. Its totient is φ = 106255760.

The previous prime is 321220103. The next prime is 321220147. The reversal of 321220122 is 221022123.

It is a happy number.

It is a super-3 number, since 3×321220122³ (a number of 26 digits) contains 333 as substring.

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, 203553 + ... + 205124.

It is an arithmetic number, because the mean of its divisors is an integer number (40459122).

Almost surely, 2^321220122 is an apocalyptic number.

321220122 is an abundant number, since it is smaller than the sum of its proper divisors (326125830).

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

321220122 is a wasteful number, since it uses less digits than its factorization.

321220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408813.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 321220122 is about 17922.6148203882. The cubic root of 321220122 is about 684.8586008246.

Adding to 321220122 its reverse (221022123), we get a palindrome (542242245).

The spelling of 321220122 in words is "three hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".