101200002020 has 36 divisors (see below), whose sum is σ = 230125219380. Its totient is φ = 37366153344.

The previous prime is 101200001999. The next prime is 101200002031. The reversal of 101200002020 is 20200002101.

It can be written as a sum of positive squares in 6 ways, for example, as 53811936676 + 47388065344 = 231974^2 + 217688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101200001989 and 101200002007.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14967035 + ... + 14973794.

It is an arithmetic number, because the mean of its divisors is an integer number (6392367205).

Almost surely, 2^101200002020 is an apocalyptic number.

101200002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101200002020 is an abundant number, since it is smaller than the sum of its proper divisors (128925217360).

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

101200002020 is a wasteful number, since it uses less digits than its factorization.

101200002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29940864 (or 29940849 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 101200002020 its reverse (20200002101), we get a palindrome (121400004121).

The spelling of 101200002020 in words is "one hundred one billion, two hundred million, two thousand, twenty".