21140243313134 has 96 divisors (see below), whose sum is σ = 38278250595648. Its totient is φ = 8712392832000.

The previous prime is 21140243312983. The next prime is 21140243313199. The reversal of 21140243313134 is 43131334204112.

It is a self number, because there is not a number n which added to its sum of digits gives 21140243313134.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 14686487 + ... + 16061549.

It is an arithmetic number, because the mean of its divisors is an integer number (398731777038).

Almost surely, 2^{21140243313134} is an apocalyptic number.

21140243313134 is a deficient number, since it is larger than the sum of its proper divisors (17138007282514).

21140243313134 is a wasteful number, since it uses less digits than its factorization.

21140243313134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375242 (or 1375231 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 21140243313134 its reverse (43131334204112), we get a palindrome (64271577517246).

The spelling of 21140243313134 in words is "twenty-one trillion, one hundred forty billion, two hundred forty-three million, three hundred thirteen thousand, one hundred thirty-four".