21103340443142 has 8 divisors (see below), whose sum is σ = 31787458408800. Its totient is φ = 10507520973544.

The previous prime is 21103340443121. The next prime is 21103340443187. The reversal of 21103340443142 is 24134404330112.

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 = 21103340443099 and 21103340443108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22074623417 + ... + 22074624372.

It is an arithmetic number, because the mean of its divisors is an integer number (3973432301100).

Almost surely, 2^{21103340443142} is an apocalyptic number.

21103340443142 is a deficient number, since it is larger than the sum of its proper divisors (10684117965658).

21103340443142 is a wasteful number, since it uses less digits than its factorization.

21103340443142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44149248030.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21103340443142 its reverse (24134404330112), we get a palindrome (45237744773254).

The spelling of 21103340443142 in words is "twenty-one trillion, one hundred three billion, three hundred forty million, four hundred forty-three thousand, one hundred forty-two".