321223222012220 has 96 divisors (see below), whose sum is σ = 736142940288000. Its totient is φ = 116768810508800.

The previous prime is 321223222012193. The next prime is 321223222012223. The reversal of 321223222012220 is 22210222322123.

It is a self number, because there is not a number n which added to its sum of digits gives 321223222012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321223222012223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9548546600 + ... + 9548580240.

It is an arithmetic number, because the mean of its divisors is an integer number (7668155628000).

Almost surely, 2^{321223222012220} is an apocalyptic number.

It is an amenable number.

321223222012220 is an abundant number, since it is smaller than the sum of its proper divisors (414919718275780).

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

321223222012220 is a wasteful number, since it uses less digits than its factorization.

321223222012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47099 (or 47097 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 321223222012220 its reverse (22210222322123), we get a palindrome (343433444334343).

The spelling of 321223222012220 in words is "three hundred twenty-one trillion, two hundred twenty-three billion, two hundred twenty-two million, twelve thousand, two hundred twenty".