21301241044 has 12 divisors (see below), whose sum is σ = 37342689300. Its totient is φ = 10631901248.

The previous prime is 21301241041. The next prime is 21301241047. The reversal of 21301241044 is 44014210312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21301241041) and next prime (21301241047).

It can be written as a sum of positive squares in 2 ways, for example, as 11393427600 + 9907813444 = 106740^2 + 99538^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301241041) 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, 4677259 + ... + 4681810.

It is an arithmetic number, because the mean of its divisors is an integer number (3111890775).

Almost surely, 2^21301241044 is an apocalyptic number.

It is an amenable number.

21301241044 is a deficient number, since it is larger than the sum of its proper divisors (16041448256).

21301241044 is a wasteful number, since it uses less digits than its factorization.

21301241044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359642 (or 9359640 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21301241044 its reverse (44014210312), we get a palindrome (65315451356).

The spelling of 21301241044 in words is "twenty-one billion, three hundred one million, two hundred forty-one thousand, forty-four".