320122012221 has 64 divisors (see below), whose sum is σ = 556186521600. Its totient is φ = 179891280000.

The previous prime is 320122012181. The next prime is 320122012229. The reversal of 320122012221 is 122210221023.

320122012221 is a `hidden beast` number, since 320 + 1 + 220 + 122 + 2 + 1 = 666.

It is not a de Polignac number, because 320122012221 - 2¹⁵ = 320121979453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320122012194 and 320122012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320122012229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338280 + ... + 868721.

It is an arithmetic number, because the mean of its divisors is an integer number (8690414400).

Almost surely, 2^320122012221 is an apocalyptic number.

It is an amenable number.

320122012221 is a deficient number, since it is larger than the sum of its proper divisors (236064509379).

320122012221 is a wasteful number, since it uses less digits than its factorization.

320122012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207087 (or 1207081 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 320122012221 its reverse (122210221023), we get a palindrome (442332233244).

The spelling of 320122012221 in words is "three hundred twenty billion, one hundred twenty-two million, twelve thousand, two hundred twenty-one".