21241444232 has 8 divisors (see below), whose sum is σ = 39827707950. Its totient is φ = 10620722112.

The previous prime is 21241444181. The next prime is 21241444331. The reversal of 21241444232 is 23244414212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20639919556 + 601524676 = 143666^2 + 24526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21241444232² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21241444195 and 21241444204.

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 as a sum of consecutive naturals, namely, 1327590257 + ... + 1327590272.

Almost surely, 2^21241444232 is an apocalyptic number.

It is an amenable number.

21241444232 is a deficient number, since it is larger than the sum of its proper divisors (18586263718).

21241444232 is a wasteful number, since it uses less digits than its factorization.

21241444232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655180535 (or 2655180531 counting only the distinct ones).

The product of its digits is 12288, while the sum is 29.

Adding to 21241444232 its reverse (23244414212), we get a palindrome (44485858444).

The spelling of 21241444232 in words is "twenty-one billion, two hundred forty-one million, four hundred forty-four thousand, two hundred thirty-two".