4024240013221 has 6 divisors (see below), whose sum is σ = 4247189598822. Its totient is φ = 3812437906920.

The previous prime is 4024240013191. The next prime is 4024240013239. The reversal of 4024240013221 is 1223100424204.

It can be written as a sum of positive squares in only one way, i.e., 2894932102500 + 1129307910721 = 1701450^2 + 1062689^2 .

It is not a de Polignac number, because 4024240013221 - 2³¹ = 4022092529573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4024240013251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5573739270 + ... + 5573739991.

It is an arithmetic number, because the mean of its divisors is an integer number (707864933137).

Almost surely, 2^{4024240013221} is an apocalyptic number.

It is an amenable number.

4024240013221 is a deficient number, since it is larger than the sum of its proper divisors (222949585601).

4024240013221 is a wasteful number, since it uses less digits than its factorization.

4024240013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11147479299 (or 11147479280 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 4024240013221 its reverse (1223100424204), we get a palindrome (5247340437425).

The spelling of 4024240013221 in words is "four trillion, twenty-four billion, two hundred forty million, thirteen thousand, two hundred twenty-one".