20112011102021 has 4 divisors (see below), whose sum is σ = 20192138636544. Its totient is φ = 20031883567500.

The previous prime is 20112011102011. The next prime is 20112011102063. The reversal of 20112011102021 is 12020111021102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20112011102021 - 2¹⁴ = 20112011085637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112011101987 and 20112011102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112011102011) 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 3 ways as a sum of consecutive naturals, for example, 40063766885 + ... + 40063767386.

It is an arithmetic number, because the mean of its divisors is an integer number (5048034659136).

Almost surely, 2^{20112011102021} is an apocalyptic number.

It is an amenable number.

20112011102021 is a deficient number, since it is larger than the sum of its proper divisors (80127534523).

20112011102021 is an equidigital number, since it uses as much as digits as its factorization.

20112011102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80127534522.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20112011102021 its reverse (12020111021102), we get a palindrome (32132122123123).

The spelling of 20112011102021 in words is "twenty trillion, one hundred twelve billion, eleven million, one hundred two thousand, twenty-one".