21411042124 has 24 divisors (see below), whose sum is σ = 37581032160. Its totient is φ = 10673652096.

The previous prime is 21411042119. The next prime is 21411042187. The reversal of 21411042124 is 42124011412.

It is a junction number, because it is equal to n+sod(n) for n = 21411042095 and 21411042104.

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 7 ways as a sum of consecutive naturals, for example, 2042304 + ... + 2052760.

It is an arithmetic number, because the mean of its divisors is an integer number (1565876340).

Almost surely, 2^21411042124 is an apocalyptic number.

It is an amenable number.

21411042124 is a deficient number, since it is larger than the sum of its proper divisors (16169990036).

21411042124 is a wasteful number, since it uses less digits than its factorization.

21411042124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11937 (or 11935 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21411042124 its reverse (42124011412), we get a palindrome (63535053536).

The spelling of 21411042124 in words is "twenty-one billion, four hundred eleven million, forty-two thousand, one hundred twenty-four".