20331121021113 has 8 divisors (see below), whose sum is σ = 30980755841728. Its totient is φ = 11617783440624.

The previous prime is 20331121021009. The next prime is 20331121021139. The reversal of 20331121021113 is 31112012113302.

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

It is not a de Polignac number, because 20331121021113 - 2²⁶ = 20331053912249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 968148620053 = 20331121021113 / (2 + 0 + 3 + 3 + 1 + 1 + 2 + 1 + 0 + 2 + 1 + 1 + 1 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 20331121021113.

It is not an unprimeable number, because it can be changed into a prime (20331121021153) 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, 484074310006 + ... + 484074310047.

It is an arithmetic number, because the mean of its divisors is an integer number (3872594480216).

Almost surely, 2^{20331121021113} is an apocalyptic number.

It is an amenable number.

20331121021113 is a deficient number, since it is larger than the sum of its proper divisors (10649634820615).

20331121021113 is an equidigital number, since it uses as much as digits as its factorization.

20331121021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968148620063.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 20331121021113 its reverse (31112012113302), we get a palindrome (51443133134415).

The spelling of 20331121021113 in words is "twenty trillion, three hundred thirty-one billion, one hundred twenty-one million, twenty-one thousand, one hundred thirteen".