100011020 has 12 divisors (see below), whose sum is σ = 210023184. Its totient is φ = 40004400.

The previous prime is 100010993. The next prime is 100011029. The reversal of 100011020 is 20110001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 100010995 and 100011013.

It is not an unprimeable number, because it can be changed into a prime (100011029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500256 + ... + 2500295.

It is an arithmetic number, because the mean of its divisors is an integer number (17501932).

Almost surely, 2^100011020 is an apocalyptic number.

100011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011020 is an abundant number, since it is smaller than the sum of its proper divisors (110012164).

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

100011020 is a wasteful number, since it uses less digits than its factorization.

100011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000560 (or 5000558 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 100011020 is about 10000.5509848208. The cubic root of 100011020 is about 464.1759328380.

Adding to 100011020 its reverse (20110001), we get a palindrome (120121021).

The spelling of 100011020 in words is "one hundred million, eleven thousand, twenty".