20111110212020 has 192 divisors, whose sum is σ = 47280155569920. Its totient is φ = 7152982425600.

The previous prime is 20111110212001. The next prime is 20111110212023. The reversal of 20111110212020 is 2021201111102.

It is a junction number, because it is equal to n+sod(n) for n = 20111110211986 and 20111110212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111110212023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54922340 + ... + 55287300.

It is an arithmetic number, because the mean of its divisors is an integer number (246250810260).

Almost surely, 2^{20111110212020} is an apocalyptic number.

20111110212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111110212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23640077784960).

20111110212020 is an abundant number, since it is smaller than the sum of its proper divisors (27169045357900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111110212020 is a wasteful number, since it uses less digits than its factorization.

20111110212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365154 (or 365152 counting only the distinct ones).

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

Adding to 20111110212020 its reverse (2021201111102), we get a palindrome (22132311323122).

The spelling of 20111110212020 in words is "twenty trillion, one hundred eleven billion, one hundred ten million, two hundred twelve thousand, twenty".