120002111220221 has 4 divisors (see below), whose sum is σ = 120131284645500. Its totient is φ = 119872937794944.

The previous prime is 120002111220197. The next prime is 120002111220247. The reversal of 120002111220221 is 122022111200021.

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 44316461157721 + 75685650062500 = 6657061^2 + 8699750^2 .

It is a cyclic number.

It is not a de Polignac number, because 120002111220221 - 2¹⁰ = 120002111219197 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 120002111220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002111220281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64586711246 + ... + 64586713103.

It is an arithmetic number, because the mean of its divisors is an integer number (30032821161375).

Almost surely, 2^{120002111220221} is an apocalyptic number.

It is an amenable number.

120002111220221 is a deficient number, since it is larger than the sum of its proper divisors (129173425279).

120002111220221 is an equidigital number, since it uses as much as digits as its factorization.

120002111220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129173425278.

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

Adding to 120002111220221 its reverse (122022111200021), we get a palindrome (242024222420242).

The spelling of 120002111220221 in words is "one hundred twenty trillion, two billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty-one".