21143132044142 has 8 divisors (see below), whose sum is σ = 31714751412576. Its totient is φ = 10571548239952.

The previous prime is 21143132044061. The next prime is 21143132044183. The reversal of 21143132044142 is 24144023134112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21143132044099 and 21143132044108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7351478 + ... + 9814809.

It is an arithmetic number, because the mean of its divisors is an integer number (3964343926572).

Almost surely, 2^{21143132044142} is an apocalyptic number.

21143132044142 is a deficient number, since it is larger than the sum of its proper divisors (10571619368434).

21143132044142 is a wasteful number, since it uses less digits than its factorization.

21143132044142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17782122.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 21143132044142 its reverse (24144023134112), we get a palindrome (45287155178254).

The spelling of 21143132044142 in words is "twenty-one trillion, one hundred forty-three billion, one hundred thirty-two million, forty-four thousand, one hundred forty-two".