20301212100 has 144 divisors (see below), whose sum is σ = 63884036160. Its totient is φ = 4947648000.

The previous prime is 20301212089. The next prime is 20301212137. The reversal of 20301212100 is 121210302.

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

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 47 ways as a sum of consecutive naturals, for example, 368131 + ... + 419669.

It is an arithmetic number, because the mean of its divisors is an integer number (443639140).

Almost surely, 2^20301212100 is an apocalyptic number.

20301212100 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 20301212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31942018080).

20301212100 is an abundant number, since it is smaller than the sum of its proper divisors (43582824060).

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

20301212100 is a wasteful number, since it uses less digits than its factorization.

20301212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51670 (or 51663 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20301212100 its reverse (121210302), we get a palindrome (20422422402).

The spelling of 20301212100 in words is "twenty billion, three hundred one million, two hundred twelve thousand, one hundred".