21244023341 has 16 divisors (see below), whose sum is σ = 22580937600. Its totient is φ = 19947912768.

The previous prime is 21244023277. The next prime is 21244023343. The reversal of 21244023341 is 14332044212.

It is a cyclic number.

It is not a de Polignac number, because 21244023341 - 2⁶ = 21244023277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21244023341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244023343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3816026 + ... + 3821588.

It is an arithmetic number, because the mean of its divisors is an integer number (1411308600).

Almost surely, 2^21244023341 is an apocalyptic number.

It is an amenable number.

21244023341 is a deficient number, since it is larger than the sum of its proper divisors (1336914259).

21244023341 is a wasteful number, since it uses less digits than its factorization.

21244023341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21244023341 its reverse (14332044212), we get a palindrome (35576067553).

The spelling of 21244023341 in words is "twenty-one billion, two hundred forty-four million, twenty-three thousand, three hundred forty-one".