21124140241161 has 8 divisors (see below), whose sum is σ = 28189369200384. Its totient is φ = 14070835721360.

The previous prime is 21124140241133. The next prime is 21124140241163. The reversal of 21124140241161 is 16114204142112.

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

It is a cyclic number.

It is not a de Polignac number, because 21124140241161 - 2¹⁵ = 21124140208393 is a prime.

It is a super-2 number, since 2×21124140241161² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21124140241163) by changing a digit.

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, 2981105721 + ... + 2981112806.

It is an arithmetic number, because the mean of its divisors is an integer number (3523671150048).

Almost surely, 2^{21124140241161} is an apocalyptic number.

It is an amenable number.

21124140241161 is a deficient number, since it is larger than the sum of its proper divisors (7065228959223).

21124140241161 is a wasteful number, since it uses less digits than its factorization.

21124140241161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5962219711.

The product of its (nonzero) digits is 3072, while the sum is 30.

Adding to 21124140241161 its reverse (16114204142112), we get a palindrome (37238344383273).

The spelling of 21124140241161 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred forty million, two hundred forty-one thousand, one hundred sixty-one".