1010020020100 has 144 divisors (see below), whose sum is σ = 2698269549696. Its totient is φ = 319567104000.

The previous prime is 1010020020089. The next prime is 1010020020109. The reversal of 1010020020100 is 10200200101.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (1010020020109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38580015 + ... + 38606185.

It is an arithmetic number, because the mean of its divisors is an integer number (18737982984).

Almost surely, 2^{1010020020100} is an apocalyptic number.

1010020020100 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 1010020020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349134774848).

1010020020100 is an abundant number, since it is smaller than the sum of its proper divisors (1688249529596).

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

1010020020100 is a wasteful number, since it uses less digits than its factorization.

1010020020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30446 (or 30439 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1010020020100 its reverse (10200200101), we get a palindrome (1020220220201).

The spelling of 1010020020100 in words is "one trillion, ten billion, twenty million, twenty thousand, one hundred".