101101020020 has 144 divisors (see below), whose sum is σ = 287222646144. Its totient is φ = 29087942400.

The previous prime is 101101020019. The next prime is 101101020047. The reversal of 101101020020 is 20020101101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9326 + ... + 449765.

Almost surely, 2^101101020020 is an apocalyptic number.

101101020020 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 101101020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143611323072).

101101020020 is an abundant number, since it is smaller than the sum of its proper divisors (186121626124).

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

101101020020 is a wasteful number, since it uses less digits than its factorization.

101101020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459142 (or 459129 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101101020020 its reverse (20020101101), we get a palindrome (121121121121).

The spelling of 101101020020 in words is "one hundred one billion, one hundred one million, twenty thousand, twenty".