2444200021 has 8 divisors (see below), whose sum is σ = 2501468640. Its totient is φ = 2387459568.

The previous prime is 2444200013. The next prime is 2444200043. The reversal of 2444200021 is 1200024442.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2444200021 - 2³ = 2444200013 is a prime.

It is a super-2 number, since 2×2444200021² = 11948227485312800882, which 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 (2444200001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122671 + ... + 141196.

It is an arithmetic number, because the mean of its divisors is an integer number (312683580).

Almost surely, 2^2444200021 is an apocalyptic number.

It is an amenable number.

2444200021 is a deficient number, since it is larger than the sum of its proper divisors (57268619).

2444200021 is a wasteful number, since it uses less digits than its factorization.

2444200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264083.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2444200021 is about 49438.8513317209. The cubic root of 2444200021 is about 1347.0351065681.

Adding to 2444200021 its reverse (1200024442), we get a palindrome (3644224463).

The spelling of 2444200021 in words is "two billion, four hundred forty-four million, two hundred thousand, twenty-one".