20340221200 has 240 divisors, whose sum is σ = 57028599936. Its totient is φ = 6902784000.

The previous prime is 20340221147. The next prime is 20340221203. The reversal of 20340221200 is 212204302.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20340221203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3798525 + ... + 3803875.

Almost surely, 2^20340221200 is an apocalyptic number.

20340221200 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 20340221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28514299968).

20340221200 is an abundant number, since it is smaller than the sum of its proper divisors (36688378736).

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

20340221200 is a wasteful number, since it uses less digits than its factorization.

20340221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442 (or 5431 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20340221200 its reverse (212204302), we get a palindrome (20552425502).

The spelling of 20340221200 in words is "twenty billion, three hundred forty million, two hundred twenty-one thousand, two hundred".