122001321221 has 24 divisors (see below), whose sum is σ = 139695816960. Its totient is φ = 106325481600.

The previous prime is 122001321209. The next prime is 122001321301. The reversal of 122001321221 is 122123100221.

It is not a de Polignac number, because 122001321221 - 2²² = 121997126917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122001321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122001321721) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 69191 + ... + 498788.

It is an arithmetic number, because the mean of its divisors is an integer number (5820659040).

Almost surely, 2^122001321221 is an apocalyptic number.

It is an amenable number.

122001321221 is a deficient number, since it is larger than the sum of its proper divisors (17694495739).

122001321221 is a wasteful number, since it uses less digits than its factorization.

122001321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568077 (or 568064 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 122001321221 its reverse (122123100221), we get a palindrome (244124421442).

The spelling of 122001321221 in words is "one hundred twenty-two billion, one million, three hundred twenty-one thousand, two hundred twenty-one".