101200020000 has 120 divisors (see below), whose sum is σ = 331956502416. Its totient is φ = 26986656000.

The previous prime is 101200019983. The next prime is 101200020091. The reversal of 101200020000 is 20002101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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 an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 783334 + ... + 903333.

Almost surely, 2^101200020000 is an apocalyptic number.

101200020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101200020000 is an abundant number, since it is smaller than the sum of its proper divisors (230756482416).

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

101200020000 is an equidigital number, since it uses as much as digits as its factorization.

101200020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686700 (or 1686677 counting only the distinct ones).

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

Adding to 101200020000 its reverse (20002101), we get a palindrome (101220022101).

The spelling of 101200020000 in words is "one hundred one billion, two hundred million, twenty thousand".