122120121221 has 8 divisors (see below), whose sum is σ = 140502537600. Its totient is φ = 103971876048.

The previous prime is 122120121199. The next prime is 122120121241. The reversal of 122120121221 is 122121021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122120121221 - 2³⁴ = 104940252037 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 122120121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120121241) 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, 58541681 + ... + 58543766.

It is an arithmetic number, because the mean of its divisors is an integer number (17562817200).

Almost surely, 2^122120121221 is an apocalyptic number.

It is an amenable number.

122120121221 is a deficient number, since it is larger than the sum of its proper divisors (18382416379).

122120121221 is a wasteful number, since it uses less digits than its factorization.

122120121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117085603.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122120121221 its reverse (122121021221), we get a palindrome (244241142442).

The spelling of 122120121221 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty-one".