21444024511412 has 24 divisors (see below), whose sum is σ = 37580551075200. Its totient is φ = 10706726313216.

The previous prime is 21444024511411. The next prime is 21444024511417. The reversal of 21444024511412 is 21411542044412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21444024511411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41597828 + ... + 42110180.

It is an arithmetic number, because the mean of its divisors is an integer number (1565856294800).

Almost surely, 2^{21444024511412} is an apocalyptic number.

It is an amenable number.

21444024511412 is a deficient number, since it is larger than the sum of its proper divisors (16136526563788).

21444024511412 is a wasteful number, since it uses less digits than its factorization.

21444024511412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527255 (or 527253 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

Adding to 21444024511412 its reverse (21411542044412), we get a palindrome (42855566555824).

The spelling of 21444024511412 in words is "twenty-one trillion, four hundred forty-four billion, twenty-four million, five hundred eleven thousand, four hundred twelve".