21404144102 has 8 divisors (see below), whose sum is σ = 35024963112. Its totient is φ = 9729156400.

The previous prime is 21404144033. The next prime is 21404144141. The reversal of 21404144102 is 20144140412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486457799 + ... + 486457842.

It is an arithmetic number, because the mean of its divisors is an integer number (4378120389).

Almost surely, 2^21404144102 is an apocalyptic number.

21404144102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21404144102 is a deficient number, since it is larger than the sum of its proper divisors (13620819010).

21404144102 is a wasteful number, since it uses less digits than its factorization.

21404144102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972915654.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 21404144102 its reverse (20144140412), we get a palindrome (41548284514).

The spelling of 21404144102 in words is "twenty-one billion, four hundred four million, one hundred forty-four thousand, one hundred two".