2220120221201 has 4 divisors (see below), whose sum is σ = 2220544156212. Its totient is φ = 2219696286192.

The previous prime is 2220120221171. The next prime is 2220120221239. The reversal of 2220120221201 is 1021220210222.

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 1091105593600 + 1129014627601 = 1044560^2 + 1062551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220120221201 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 2220120221201.

It is not an unprimeable number, because it can be changed into a prime (2220120211201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211959650 + ... + 211970123.

It is an arithmetic number, because the mean of its divisors is an integer number (555136039053).

Almost surely, 2^{2220120221201} is an apocalyptic number.

It is an amenable number.

2220120221201 is a deficient number, since it is larger than the sum of its proper divisors (423935011).

2220120221201 is an equidigital number, since it uses as much as digits as its factorization.

2220120221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423935010.

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

Adding to 2220120221201 its reverse (1021220210222), we get a palindrome (3241340431423).

The spelling of 2220120221201 in words is "two trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, two hundred one".