21313303120123 has 8 divisors (see below), whose sum is σ = 24358444609248. Its totient is φ = 18268257606144.

The previous prime is 21313303120091. The next prime is 21313303120163. The reversal of 21313303120123 is 32102130331312.

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

It is not a de Polignac number, because 21313303120123 - 2⁵ = 21313303120091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313303120163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23517286 + ... + 24406747.

It is an arithmetic number, because the mean of its divisors is an integer number (3044805576156).

Almost surely, 2^{21313303120123} is an apocalyptic number.

21313303120123 is a deficient number, since it is larger than the sum of its proper divisors (3045141489125).

21313303120123 is an equidigital number, since it uses as much as digits as its factorization.

21313303120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47987573.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21313303120123 its reverse (32102130331312), we get a palindrome (53415433451435).

The spelling of 21313303120123 in words is "twenty-one trillion, three hundred thirteen billion, three hundred three million, one hundred twenty thousand, one hundred twenty-three".