2043220242221 has 16 divisors (see below), whose sum is σ = 2165503507200. Its totient is φ = 1921170279168.

The previous prime is 2043220242199. The next prime is 2043220242269. The reversal of 2043220242221 is 1222420223402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2043220242221 - 2¹⁸ = 2043219980077 is a prime.

It is a super-2 number, since 2×2043220242221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043220292221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212542811 + ... + 212552423.

It is an arithmetic number, because the mean of its divisors is an integer number (135343969200).

Almost surely, 2^{2043220242221} is an apocalyptic number.

It is an amenable number.

2043220242221 is a deficient number, since it is larger than the sum of its proper divisors (122283264979).

2043220242221 is a wasteful number, since it uses less digits than its factorization.

2043220242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 2043220242221 its reverse (1222420223402), we get a palindrome (3265640465623).

The spelling of 2043220242221 in words is "two trillion, forty-three billion, two hundred twenty million, two hundred forty-two thousand, two hundred twenty-one".