21124100041 has 16 divisors (see below), whose sum is σ = 24263055360. Its totient is φ = 18188718480.

The previous prime is 21124100027. The next prime is 21124100087. The reversal of 21124100041 is 14000142112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21124100041 - 2¹¹ = 21124097993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21124099988 and 21124100024.

It is not an unprimeable number, because it can be changed into a prime (21124100141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146000 + ... + 1164286.

It is an arithmetic number, because the mean of its divisors is an integer number (1516440960).

Almost surely, 2^21124100041 is an apocalyptic number.

It is an amenable number.

21124100041 is a deficient number, since it is larger than the sum of its proper divisors (3138955319).

21124100041 is a wasteful number, since it uses less digits than its factorization.

21124100041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23844.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21124100041 its reverse (14000142112), we get a palindrome (35124242153).

The spelling of 21124100041 in words is "twenty-one billion, one hundred twenty-four million, one hundred thousand, forty-one".