12121301001321 has 16 divisors (see below), whose sum is σ = 18142611659200. Its totient is φ = 7997559421824.

The previous prime is 12121301001263. The next prime is 12121301001331. The reversal of 12121301001321 is 12310010312121.

12121301001321 is a `hidden beast` number, since 1 + 21 + 21 + 301 + 0 + 0 + 1 + 321 = 666.

It is not a de Polignac number, because 12121301001321 - 2⁷ = 12121301001193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12121301001294 and 12121301001303.

It is not an unprimeable number, because it can be changed into a prime (12121301001331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314106011 + ... + 2314111248.

It is an arithmetic number, because the mean of its divisors is an integer number (1133913228700).

Almost surely, 2^{12121301001321} is an apocalyptic number.

It is an amenable number.

12121301001321 is a deficient number, since it is larger than the sum of its proper divisors (6021310657879).

12121301001321 is an equidigital number, since it uses as much as digits as its factorization.

12121301001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628217365 (or 4628217359 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12121301001321 its reverse (12310010312121), we get a palindrome (24431311313442).

The spelling of 12121301001321 in words is "twelve trillion, one hundred twenty-one billion, three hundred one million, one thousand, three hundred twenty-one".