4204144142221 has 4 divisors (see below), whose sum is σ = 4214951711100. Its totient is φ = 4193336573344.

The previous prime is 4204144142207. The next prime is 4204144142257. The reversal of 4204144142221 is 1222414414024.

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 579404126596 + 3624740015625 = 761186^2 + 1903875^2 .

It is a cyclic number.

It is not a de Polignac number, because 4204144142221 - 2²⁷ = 4204009924493 is a prime.

It is a super-2 number, since 2×4204144142221² (a number of 26 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 (4204144142291) 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, 5403783856 + ... + 5403784633.

It is an arithmetic number, because the mean of its divisors is an integer number (1053737927775).

Almost surely, 2^{4204144142221} is an apocalyptic number.

It is an amenable number.

4204144142221 is a deficient number, since it is larger than the sum of its proper divisors (10807568879).

4204144142221 is a wasteful number, since it uses less digits than its factorization.

4204144142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807568878.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 4204144142221 its reverse (1222414414024), we get a palindrome (5426558556245).

The spelling of 4204144142221 in words is "four trillion, two hundred four billion, one hundred forty-four million, one hundred forty-two thousand, two hundred twenty-one".