101010020 has 24 divisors (see below), whose sum is σ = 221344704. Its totient is φ = 38647136.

The previous prime is 101009983. The next prime is 101010031. The reversal of 101010020 is 20010101.

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 = 101009986 and 101010013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109334 + ... + 110253.

It is an arithmetic number, because the mean of its divisors is an integer number (9222696).

Almost surely, 2^101010020 is an apocalyptic number.

101010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101010020 is an abundant number, since it is smaller than the sum of its proper divisors (120334684).

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

101010020 is a wasteful number, since it uses less digits than its factorization.

101010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219619 (or 219617 counting only the distinct ones).

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

The square root of 101010020 is about 10050.3741223897. The cubic root of 101010020 is about 465.7163506788.

Adding to 101010020 its reverse (20010101), we get a palindrome (121020121).

The spelling of 101010020 in words is "one hundred one million, ten thousand, twenty".