21403344110 has 8 divisors (see below), whose sum is σ = 38526019416. Its totient is φ = 8561337640.

The previous prime is 21403344091. The next prime is 21403344113. The reversal of 21403344110 is 1144330412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403344113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1070167196 + ... + 1070167215.

It is an arithmetic number, because the mean of its divisors is an integer number (4815752427).

Almost surely, 2^21403344110 is an apocalyptic number.

21403344110 is a deficient number, since it is larger than the sum of its proper divisors (17122675306).

21403344110 is a wasteful number, since it uses less digits than its factorization.

21403344110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140334418.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21403344110 its reverse (1144330412), we get a palindrome (22547674522).

The spelling of 21403344110 in words is "twenty-one billion, four hundred three million, three hundred forty-four thousand, one hundred ten".