21404333041 has 32 divisors (see below), whose sum is σ = 27010565120. Its totient is φ = 16508245824.

The previous prime is 21404333039. The next prime is 21404333057. The reversal of 21404333041 is 14033340412.

It is not a de Polignac number, because 21404333041 - 2¹ = 21404333039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21404332997 and 21404333015.

It is not an unprimeable number, because it can be changed into a prime (21404333011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2041270 + ... + 2051728.

It is an arithmetic number, because the mean of its divisors is an integer number (844080160).

Almost surely, 2^21404333041 is an apocalyptic number.

It is an amenable number.

21404333041 is a deficient number, since it is larger than the sum of its proper divisors (5606232079).

21404333041 is a wasteful number, since it uses less digits than its factorization.

21404333041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11045.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21404333041 its reverse (14033340412), we get a palindrome (35437673453).

The spelling of 21404333041 in words is "twenty-one billion, four hundred four million, three hundred thirty-three thousand, forty-one".