4244242020021 has 6 divisors (see below), whose sum is σ = 6130571806710. Its totient is φ = 2829494680008.

The previous prime is 4244242020019. The next prime is 4244242020023. The reversal of 4244242020021 is 1200202424424.

It is an interprime number because it is at equal distance from previous prime (4244242020019) and next prime (4244242020023).

It can be written as a sum of positive squares in only one way, i.e., 3989151365796 + 255090654225 = 1997286^2 + 505065^2 .

It is not a de Polignac number, because 4244242020021 - 2¹ = 4244242020019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4244242020023) 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, 235791223326 + ... + 235791223343.

It is an arithmetic number, because the mean of its divisors is an integer number (1021761967785).

Almost surely, 2^{4244242020021} is an apocalyptic number.

It is an amenable number.

4244242020021 is a deficient number, since it is larger than the sum of its proper divisors (1886329786689).

4244242020021 is a wasteful number, since it uses less digits than its factorization.

4244242020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471582446675 (or 471582446672 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 4244242020021 its reverse (1200202424424), we get a palindrome (5444444444445).

The spelling of 4244242020021 in words is "four trillion, two hundred forty-four billion, two hundred forty-two million, twenty thousand, twenty-one".