21726113060123 has 4 divisors (see below), whose sum is σ = 21732176729088. Its totient is φ = 21720049391160.

The previous prime is 21726113060077. The next prime is 21726113060191. The reversal of 21726113060123 is 32106031162712.

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 21726113060123 - 2³⁶ = 21657393583387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21726113060023) 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 3 ways as a sum of consecutive naturals, for example, 3031829108 + ... + 3031836273.

It is an arithmetic number, because the mean of its divisors is an integer number (5433044182272).

Almost surely, 2^{21726113060123} is an apocalyptic number.

21726113060123 is a deficient number, since it is larger than the sum of its proper divisors (6063668965).

21726113060123 is an equidigital number, since it uses as much as digits as its factorization.

21726113060123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063668964.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 21726113060123 in words is "twenty-one trillion, seven hundred twenty-six billion, one hundred thirteen million, sixty thousand, one hundred twenty-three".