120002222200121 has 4 divisors (see below), whose sum is σ = 120435443219172. Its totient is φ = 119569001181072.

The previous prime is 120002222200109. The next prime is 120002222200123. The reversal of 120002222200121 is 121002222200021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49165844090896 + 70836378109225 = 7011836^2 + 8416435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120002222200121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120002222200121.

It is not an unprimeable number, because it can be changed into a prime (120002222200123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216610509110 + ... + 216610509663.

It is an arithmetic number, because the mean of its divisors is an integer number (30108860804793).

Almost surely, 2^{120002222200121} is an apocalyptic number.

It is an amenable number.

120002222200121 is a deficient number, since it is larger than the sum of its proper divisors (433221019051).

120002222200121 is an equidigital number, since it uses as much as digits as its factorization.

120002222200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433221019050.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120002222200121 its reverse (121002222200021), we get a palindrome (241004444400142).

The spelling of 120002222200121 in words is "one hundred twenty trillion, two billion, two hundred twenty-two million, two hundred thousand, one hundred twenty-one".