101020020 has 24 divisors (see below), whose sum is σ = 282856224. Its totient is φ = 26938656.

The previous prime is 101020009. The next prime is 101020037. The reversal of 101020020 is 20020101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 101019990 and 101020008.

It is a congruent number.

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, 841774 + ... + 841893.

It is an arithmetic number, because the mean of its divisors is an integer number (11785676).

Almost surely, 2^101020020 is an apocalyptic number.

101020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101020020 is an abundant number, since it is smaller than the sum of its proper divisors (181836204).

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

101020020 is a wasteful number, since it uses less digits than its factorization.

101020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683679 (or 1683677 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 101020020 is about 10050.8716039953. The cubic root of 101020020 is about 465.7317188236.

Adding to 101020020 its reverse (20020101), we get a palindrome (121040121).

The spelling of 101020020 in words is "one hundred one million, twenty thousand, twenty".