20430200100 has 72 divisors (see below), whose sum is σ = 59229334080. Its totient is φ = 5437182080.

The previous prime is 20430200023. The next prime is 20430200107. The reversal of 20430200100 is 100203402.

It is a super-2 number, since 2×20430200100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20430200107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83206 + ... + 218594.

It is an arithmetic number, because the mean of its divisors is an integer number (822629640).

Almost surely, 2^20430200100 is an apocalyptic number.

20430200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20430200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29614667040).

20430200100 is an abundant number, since it is smaller than the sum of its proper divisors (38799133980).

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

20430200100 is a wasteful number, since it uses less digits than its factorization.

20430200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135909 (or 135902 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20430200100 its reverse (100203402), we get a palindrome (20530403502).

The spelling of 20430200100 in words is "twenty billion, four hundred thirty million, two hundred thousand, one hundred".