20020020100 has 36 divisors (see below), whose sum is σ = 44844851968. Its totient is φ = 7749684000.

The previous prime is 20020020091. The next prime is 20020020101. The reversal of 20020020100 is 102002002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20020020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3225936 + ... + 3232135.

Almost surely, 2^20020020100 is an apocalyptic number.

20020020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020020100 is an abundant number, since it is smaller than the sum of its proper divisors (24824831868).

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

20020020100 is a wasteful number, since it uses less digits than its factorization.

20020020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458116 (or 6458109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 20020020100 its reverse (102002002), we get a palindrome (20122022102).

The spelling of 20020020100 in words is "twenty billion, twenty million, twenty thousand, one hundred".