21044420341 has 8 divisors (see below), whose sum is σ = 24067353024. Its totient is φ = 18025634400.

The previous prime is 21044420321. The next prime is 21044420359. The reversal of 21044420341 is 14302444012.

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 21044420341 - 2¹⁹ = 21043896053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044420321) 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, 1025800 + ... + 1046113.

It is an arithmetic number, because the mean of its divisors is an integer number (3008419128).

Almost surely, 2^21044420341 is an apocalyptic number.

It is an amenable number.

21044420341 is a deficient number, since it is larger than the sum of its proper divisors (3022932683).

21044420341 is a wasteful number, since it uses less digits than its factorization.

21044420341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073371.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21044420341 its reverse (14302444012), we get a palindrome (35346864353).

The spelling of 21044420341 in words is "twenty-one billion, forty-four million, four hundred twenty thousand, three hundred forty-one".