200321100220 has 24 divisors (see below), whose sum is σ = 420717273984. Its totient is φ = 80120256576.

The previous prime is 200321100197. The next prime is 200321100223. The reversal of 200321100220 is 22001123002.

It is a self number, because there is not a number n which added to its sum of digits gives 200321100220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200321100223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308787 + ... + 704266.

It is an arithmetic number, because the mean of its divisors is an integer number (17529886416).

Almost surely, 2^200321100220 is an apocalyptic number.

200321100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200321100220 is an abundant number, since it is smaller than the sum of its proper divisors (220396173764).

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

200321100220 is a wasteful number, since it uses less digits than its factorization.

200321100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022949 (or 1022947 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 200321100220 its reverse (22001123002), we get a palindrome (222322223222).

The spelling of 200321100220 in words is "two hundred billion, three hundred twenty-one million, one hundred thousand, two hundred twenty".