21401410124 has 24 divisors (see below), whose sum is σ = 37711930368. Its totient is φ = 10626794640.

The previous prime is 21401410067. The next prime is 21401410157. The reversal of 21401410124 is 42101410412.

It is a junction number, because it is equal to n+sod(n) for n = 21401410096 and 21401410105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363389 + ... + 418155.

It is an arithmetic number, because the mean of its divisors is an integer number (1571330432).

Almost surely, 2^21401410124 is an apocalyptic number.

It is an amenable number.

21401410124 is a deficient number, since it is larger than the sum of its proper divisors (16310520244).

21401410124 is a wasteful number, since it uses less digits than its factorization.

21401410124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55445 (or 55443 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21401410124 its reverse (42101410412), we get a palindrome (63502820536).

The spelling of 21401410124 in words is "twenty-one billion, four hundred one million, four hundred ten thousand, one hundred twenty-four".