4244202404021 has 4 divisors (see below), whose sum is σ = 4256024695200. Its totient is φ = 4232380112844.

The previous prime is 4244202404011. The next prime is 4244202404047. The reversal of 4244202404021 is 1204042024424.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4244202404021 - 2¹⁸ = 4244202141877 is a prime.

It is a super-3 number, since 3×4244202404021³ (a number of 39 digits) contains 333 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 (4244202404011) 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, 5911145051 + ... + 5911145768.

It is an arithmetic number, because the mean of its divisors is an integer number (1064006173800).

Almost surely, 2^{4244202404021} is an apocalyptic number.

It is an amenable number.

4244202404021 is a deficient number, since it is larger than the sum of its proper divisors (11822291179).

4244202404021 is a wasteful number, since it uses less digits than its factorization.

4244202404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822291178.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 4244202404021 its reverse (1204042024424), we get a palindrome (5448244428445).

The spelling of 4244202404021 in words is "four trillion, two hundred forty-four billion, two hundred two million, four hundred four thousand, twenty-one".