20213030100 has 72 divisors (see below), whose sum is σ = 58500505728. Its totient is φ = 5388531200.

The previous prime is 20213030093. The next prime is 20213030119. The reversal of 20213030100 is 103031202.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1264357 + ... + 1280243.

It is an arithmetic number, because the mean of its divisors is an integer number (812507024).

Almost surely, 2^20213030100 is an apocalyptic number.

20213030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213030100 is an abundant number, since it is smaller than the sum of its proper divisors (38287475628).

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

20213030100 is a wasteful number, since it uses less digits than its factorization.

20213030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20145 (or 20138 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20213030100 its reverse (103031202), we get a palindrome (20316061302).

The spelling of 20213030100 in words is "twenty billion, two hundred thirteen million, thirty thousand, one hundred".