2220203143121 has 4 divisors (see below), whose sum is σ = 2220208097700. Its totient is φ = 2220198188544.

The previous prime is 2220203143091. The next prime is 2220203143141. The reversal of 2220203143121 is 1213413020222.

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 491346323521 + 1728856819600 = 700961^2 + 1314860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220203143121 - 2¹⁰ = 2220203142097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220203143141) 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, 1729976 + ... + 2726393.

It is an arithmetic number, because the mean of its divisors is an integer number (555052024425).

Almost surely, 2^{2220203143121} is an apocalyptic number.

It is an amenable number.

2220203143121 is a deficient number, since it is larger than the sum of its proper divisors (4954579).

2220203143121 is an equidigital number, since it uses as much as digits as its factorization.

2220203143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954578.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2220203143121 its reverse (1213413020222), we get a palindrome (3433616163343).

The spelling of 2220203143121 in words is "two trillion, two hundred twenty billion, two hundred three million, one hundred forty-three thousand, one hundred twenty-one".