321440214220 has 24 divisors (see below), whose sum is σ = 675503589600. Its totient is φ = 128484820992.

The previous prime is 321440214211. The next prime is 321440214223. The reversal of 321440214220 is 22412044123.

It is a super-2 number, since 2×321440214220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321440214223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5675160 + ... + 5731519.

It is an arithmetic number, because the mean of its divisors is an integer number (28145982900).

Almost surely, 2^321440214220 is an apocalyptic number.

It is an amenable number.

321440214220 is an abundant number, since it is smaller than the sum of its proper divisors (354063375380).

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

321440214220 is a wasteful number, since it uses less digits than its factorization.

321440214220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408097 (or 11408095 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 321440214220 its reverse (22412044123), we get a palindrome (343852258343).

The spelling of 321440214220 in words is "three hundred twenty-one billion, four hundred forty million, two hundred fourteen thousand, two hundred twenty".