4244242054021 has 4 divisors (see below), whose sum is σ = 4244295798592. Its totient is φ = 4244188309452.

The previous prime is 4244242054009. The next prime is 4244242054099. The reversal of 4244242054021 is 1204502424424.

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 a de Polignac number, because none of the positive numbers 2^k-4244242054021 is a prime.

It is a super-2 number, since 2×4244242054021² (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 (4244242054001) 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, 26753655 + ... + 26911828.

It is an arithmetic number, because the mean of its divisors is an integer number (1061073949648).

Almost surely, 2^{4244242054021} is an apocalyptic number.

It is an amenable number.

4244242054021 is a deficient number, since it is larger than the sum of its proper divisors (53744571).

4244242054021 is an equidigital number, since it uses as much as digits as its factorization.

4244242054021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53744570.

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 4244242054021 its reverse (1204502424424), we get a palindrome (5448744478445).

The spelling of 4244242054021 in words is "four trillion, two hundred forty-four billion, two hundred forty-two million, fifty-four thousand, twenty-one".