21124131332326 has 16 divisors (see below), whose sum is σ = 34567106918400. Its totient is φ = 9601781612680.

The previous prime is 21124131332321. The next prime is 21124131332341. The reversal of 21124131332326 is 62323313142112.

It is a junction number, because it is equal to n+sod(n) for n = 21124131332291 and 21124131332300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124131332321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545306 + ... + 6980461.

It is an arithmetic number, because the mean of its divisors is an integer number (2160444182400).

Almost surely, 2^{21124131332326} is an apocalyptic number.

21124131332326 is a deficient number, since it is larger than the sum of its proper divisors (13442975586074).

21124131332326 is a wasteful number, since it uses less digits than its factorization.

21124131332326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9626579.

The product of its digits is 31104, while the sum is 34.

Adding to 21124131332326 its reverse (62323313142112), we get a palindrome (83447444474438).

The spelling of 21124131332326 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred thirty-one million, three hundred thirty-two thousand, three hundred twenty-six".