20123120131321 has 8 divisors (see below), whose sum is σ = 21698871516000. Its totient is φ = 18599032726560.

The previous prime is 20123120131297. The next prime is 20123120131343. The reversal of 20123120131321 is 12313102132102.

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 20123120131321 - 2³¹ = 20120972647673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123120131292 and 20123120131301.

It is not an unprimeable number, because it can be changed into a prime (20123120131921) 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, 12915994171 + ... + 12915995728.

It is an arithmetic number, because the mean of its divisors is an integer number (2712358939500).

Almost surely, 2^{20123120131321} is an apocalyptic number.

It is an amenable number.

20123120131321 is a deficient number, since it is larger than the sum of its proper divisors (1575751384679).

20123120131321 is a wasteful number, since it uses less digits than its factorization.

20123120131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25831989959.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20123120131321 its reverse (12313102132102), we get a palindrome (32436222263423).

The spelling of 20123120131321 in words is "twenty trillion, one hundred twenty-three billion, one hundred twenty million, one hundred thirty-one thousand, three hundred twenty-one".