101111202020020 has 192 divisors, whose sum is σ = 229625136921600. Its totient is φ = 37281267394560.

The previous prime is 101111202019981. The next prime is 101111202020021. The reversal of 101111202020020 is 20020202111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111202020021) 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, 2789949100 + ... + 2789985340.

It is an arithmetic number, because the mean of its divisors is an integer number (1195964254800).

Almost surely, 2^{101111202020020} is an apocalyptic number.

101111202020020 is a gapful number since it is divisible by the number (10) 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 101111202020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114812568460800).

101111202020020 is an abundant number, since it is smaller than the sum of its proper divisors (128513934901580).

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

101111202020020 is a wasteful number, since it uses less digits than its factorization.

101111202020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37598 (or 37596 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101111202020020 its reverse (20020202111101), we get a palindrome (121131404131121).

The spelling of 101111202020020 in words is "one hundred one trillion, one hundred eleven billion, two hundred two million, twenty thousand, twenty".