201202100020 has 24 divisors (see below), whose sum is σ = 422536300200. Its totient is φ = 80478575232.

The previous prime is 201202100003. The next prime is 201202100051. The reversal of 201202100020 is 20001202102.

201202100020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 35497764 + 201166602256 = 5958^2 + 448516^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712666 + ... + 954094.

It is an arithmetic number, because the mean of its divisors is an integer number (17605679175).

Almost surely, 2^201202100020 is an apocalyptic number.

201202100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201202100020 is an abundant number, since it is smaller than the sum of its proper divisors (221334200180).

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

201202100020 is a wasteful number, since it uses less digits than its factorization.

201202100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283107 (or 283105 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 201202100020 its reverse (20001202102), we get a palindrome (221203302122).

The spelling of 201202100020 in words is "two hundred one billion, two hundred two million, one hundred thousand, twenty".