21180124532323 has 4 divisors (see below), whose sum is σ = 21435306755688. Its totient is φ = 20924942308960.

The previous prime is 21180124532321. The next prime is 21180124532393. The reversal of 21180124532323 is 32323542108112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21180124532323 - 2¹ = 21180124532321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21180124532321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127591111558 + ... + 127591111723.

It is an arithmetic number, because the mean of its divisors is an integer number (5358826688922).

Almost surely, 2^{21180124532323} is an apocalyptic number.

21180124532323 is a deficient number, since it is larger than the sum of its proper divisors (255182223365).

21180124532323 is an equidigital number, since it uses as much as digits as its factorization.

21180124532323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255182223364.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 21180124532323 in words is "twenty-one trillion, one hundred eighty billion, one hundred twenty-four million, five hundred thirty-two thousand, three hundred twenty-three".