20331330013121 has 16 divisors (see below), whose sum is σ = 21138621305088. Its totient is φ = 19538882985600.

The previous prime is 20331330013087. The next prime is 20331330013193. The reversal of 20331330013121 is 12131003313302.

It is a de Polignac number, because none of the positive numbers 2^k-20331330013121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331330013021) 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, 144924791 + ... + 145065011.

It is an arithmetic number, because the mean of its divisors is an integer number (1321163831568).

Almost surely, 2^{20331330013121} is an apocalyptic number.

It is an amenable number.

20331330013121 is a deficient number, since it is larger than the sum of its proper divisors (807291291967).

20331330013121 is a wasteful number, since it uses less digits than its factorization.

20331330013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193112.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 20331330013121 its reverse (12131003313302), we get a palindrome (32462333326423).

The spelling of 20331330013121 in words is "twenty trillion, three hundred thirty-one billion, three hundred thirty million, thirteen thousand, one hundred twenty-one".