21124344003412 has 96 divisors (see below), whose sum is σ = 40113462114432. Its totient is φ = 9676015405056.

The previous prime is 21124344003349. The next prime is 21124344003421. The reversal of 21124344003412 is 21430044342112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6153317248 + ... + 6153320680.

It is an arithmetic number, because the mean of its divisors is an integer number (417848563692).

Almost surely, 2^{21124344003412} is an apocalyptic number.

It is an amenable number.

21124344003412 is a deficient number, since it is larger than the sum of its proper divisors (18989118111020).

21124344003412 is a wasteful number, since it uses less digits than its factorization.

21124344003412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177 (or 5175 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 21124344003412 its reverse (21430044342112), we get a palindrome (42554388345524).

The spelling of 21124344003412 in words is "twenty-one trillion, one hundred twenty-four billion, three hundred forty-four million, three thousand, four hundred twelve".