20021102300 has 144 divisors (see below), whose sum is σ = 47561955840. Its totient is φ = 7285693440.

The previous prime is 20021102221. The next prime is 20021102327. The reversal of 20021102300 is 320112002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6630191 + ... + 6633209.

It is an arithmetic number, because the mean of its divisors is an integer number (330291360).

Almost surely, 2^20021102300 is an apocalyptic number.

20021102300 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 20021102300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23780977920).

20021102300 is an abundant number, since it is smaller than the sum of its proper divisors (27540853540).

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

20021102300 is a wasteful number, since it uses less digits than its factorization.

20021102300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180 (or 3173 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20021102300 its reverse (320112002), we get a palindrome (20341214302).

The spelling of 20021102300 in words is "twenty billion, twenty-one million, one hundred two thousand, three hundred".