21411312242143 has 8 divisors (see below), whose sum is σ = 21613829155488. Its totient is φ = 21209024035584.

The previous prime is 21411312242119. The next prime is 21411312242147. The reversal of 21411312242143 is 34124221311412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21411312242143 - 2¹⁷ = 21411312111071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411312242147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56988571 + ... + 57363052.

It is an arithmetic number, because the mean of its divisors is an integer number (2701728644436).

Almost surely, 2^{21411312242143} is an apocalyptic number.

21411312242143 is a deficient number, since it is larger than the sum of its proper divisors (202516913345).

21411312242143 is a wasteful number, since it uses less digits than its factorization.

21411312242143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114353393.

The product of its digits is 9216, while the sum is 31.

Adding to 21411312242143 its reverse (34124221311412), we get a palindrome (55535533553555).

The spelling of 21411312242143 in words is "twenty-one trillion, four hundred eleven billion, three hundred twelve million, two hundred forty-two thousand, one hundred forty-three".