101020110020100 has 360 divisors, whose sum is σ = 333900740859840. Its totient is φ = 26410232459520.

The previous prime is 101020110020059. The next prime is 101020110020101. The reversal of 101020110020100 is 1020011020101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (101020110020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 566157499 + ... + 566335901.

It is an arithmetic number, because the mean of its divisors is an integer number (927502057944).

Almost surely, 2^{101020110020100} is an apocalyptic number.

101020110020100 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 101020110020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166950370429920).

101020110020100 is an abundant number, since it is smaller than the sum of its proper divisors (232880630839740).

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

101020110020100 is a wasteful number, since it uses less digits than its factorization.

101020110020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179801 (or 179785 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101020110020100 its reverse (1020011020101), we get a palindrome (102040121040201).

The spelling of 101020110020100 in words is "one hundred one trillion, twenty billion, one hundred ten million, twenty thousand, one hundred".