20021120111013 has 8 divisors (see below), whose sum is σ = 30508373502528. Its totient is φ = 11440640063424.

The previous prime is 20021120110997. The next prime is 20021120111033. The reversal of 20021120111013 is 31011102112002.

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

It is not a de Polignac number, because 20021120111013 - 2⁴ = 20021120110997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20021120110983 and 20021120111001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021120111033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476693335956 + ... + 476693335997.

It is an arithmetic number, because the mean of its divisors is an integer number (3813546687816).

Almost surely, 2^{20021120111013} is an apocalyptic number.

It is an amenable number.

20021120111013 is a deficient number, since it is larger than the sum of its proper divisors (10487253391515).

20021120111013 is an equidigital number, since it uses as much as digits as its factorization.

20021120111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953386671963.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20021120111013 its reverse (31011102112002), we get a palindrome (51032222223015).

The spelling of 20021120111013 in words is "twenty trillion, twenty-one billion, one hundred twenty million, one hundred eleven thousand, thirteen".