20020200100 has 36 divisors (see below), whose sum is σ = 43694992404. Its totient is φ = 7961783680.

The previous prime is 20020200097. The next prime is 20020200121. The reversal of 20020200100 is 100202002.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 267584164 + 19752615936 = 16358^2 + 140544^2 .

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, 561319 + ... + 595918.

It is an arithmetic number, because the mean of its divisors is an integer number (1213749789).

Almost surely, 2^20020200100 is an apocalyptic number.

20020200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020200100 is an abundant number, since it is smaller than the sum of its proper divisors (23674792304).

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

20020200100 is a wasteful number, since it uses less digits than its factorization.

20020200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157424 (or 1157417 counting only the distinct ones).

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

Adding to 20020200100 its reverse (100202002), we get a palindrome (20120402102).

The spelling of 20020200100 in words is "twenty billion, twenty million, two hundred thousand, one hundred".