101002000020 has 24 divisors (see below), whose sum is σ = 282805600224. Its totient is φ = 26933866656.

The previous prime is 101002000019. The next prime is 101002000031. The reversal of 101002000020 is 20000200101.

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 = 101001999972 and 101002000008.

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, 841683274 + ... + 841683393.

It is an arithmetic number, because the mean of its divisors is an integer number (11783566676).

Almost surely, 2^101002000020 is an apocalyptic number.

101002000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101002000020 is an abundant number, since it is smaller than the sum of its proper divisors (181803600204).

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

101002000020 is a wasteful number, since it uses less digits than its factorization.

101002000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683366679 (or 1683366677 counting only the distinct ones).

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

Adding to 101002000020 its reverse (20000200101), we get a palindrome (121002200121).

The spelling of 101002000020 in words is "one hundred one billion, two million, twenty", and thus it is an aban number.