20300021200 has 60 divisors (see below), whose sum is σ = 48788920588. Its totient is φ = 8116992000.

The previous prime is 20300021167. The next prime is 20300021207. The reversal of 20300021200 is 212000302.

It can be written as a sum of positive squares in 6 ways, for example, as 4463308864 + 15836712336 = 66808^2 + 125844^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300021207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1293400 + ... + 1309000.

Almost surely, 2^20300021200 is an apocalyptic number.

20300021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20300021200 is an abundant number, since it is smaller than the sum of its proper divisors (28488899388).

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

20300021200 is a wasteful number, since it uses less digits than its factorization.

20300021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18872 (or 18861 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20300021200 its reverse (212000302), we get a palindrome (20512021502).

The spelling of 20300021200 in words is "twenty billion, three hundred million, twenty-one thousand, two hundred".