21343024042444 has 12 divisors (see below), whose sum is σ = 40223391464704. Its totient is φ = 9850626481104.

The previous prime is 21343024042441. The next prime is 21343024042447. The reversal of 21343024042444 is 44424042034312.

It is an interprime number because it is at equal distance from previous prime (21343024042441) and next prime (21343024042447).

It is a super-2 number, since 2×21343024042444² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21343024042441) 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, 205221384972 + ... + 205221385075.

Almost surely, 2^{21343024042444} is an apocalyptic number.

It is an amenable number.

21343024042444 is a deficient number, since it is larger than the sum of its proper divisors (18880367422260).

21343024042444 is a wasteful number, since it uses less digits than its factorization.

21343024042444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410442770064 (or 410442770062 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 37.

Adding to 21343024042444 its reverse (44424042034312), we get a palindrome (65767066076756).

The spelling of 21343024042444 in words is "twenty-one trillion, three hundred forty-three billion, twenty-four million, forty-two thousand, four hundred forty-four".