21143140040203 has 4 divisors (see below), whose sum is σ = 21143248591120. Its totient is φ = 21143031489288.

The previous prime is 21143140040131. The next prime is 21143140040249. The reversal of 21143140040203 is 30204004134112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21143140040203 - 2⁹ = 21143140039691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21143140040273) 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, 53982768 + ... + 54373021.

It is an arithmetic number, because the mean of its divisors is an integer number (5285812147780).

Almost surely, 2^{21143140040203} is an apocalyptic number.

21143140040203 is a deficient number, since it is larger than the sum of its proper divisors (108550917).

21143140040203 is a wasteful number, since it uses less digits than its factorization.

21143140040203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108550916.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21143140040203 its reverse (30204004134112), we get a palindrome (51347144174315).

The spelling of 21143140040203 in words is "twenty-one trillion, one hundred forty-three billion, one hundred forty million, forty thousand, two hundred three".