21241145332 has 24 divisors (see below), whose sum is σ = 41494334112. Its totient is φ = 9430528800.

The previous prime is 21241145243. The next prime is 21241145353. The reversal of 21241145332 is 23354114212.

It is a self number, because there is not a number n which added to its sum of digits gives 21241145332.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5611519 + ... + 5615302.

It is an arithmetic number, because the mean of its divisors is an integer number (1728930588).

Almost surely, 2^21241145332 is an apocalyptic number.

21241145332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21241145332 is a deficient number, since it is larger than the sum of its proper divisors (20253188780).

21241145332 is a wasteful number, since it uses less digits than its factorization.

21241145332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11226879 (or 11226877 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

Adding to 21241145332 its reverse (23354114212), we get a palindrome (44595259544).

The spelling of 21241145332 in words is "twenty-one billion, two hundred forty-one million, one hundred forty-five thousand, three hundred thirty-two".