2021221020200 has 96 divisors (see below), whose sum is σ = 4711367203200. Its totient is φ = 806421757440.

The previous prime is 2021221020199. The next prime is 2021221020229. The reversal of 2021221020200 is 20201221202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130418852 + ... + 130434348.

It is an arithmetic number, because the mean of its divisors is an integer number (49076741700).

Almost surely, 2^{2021221020200} is an apocalyptic number.

2021221020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021221020200 is an abundant number, since it is smaller than the sum of its proper divisors (2690146183000).

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

2021221020200 is a wasteful number, since it uses less digits than its factorization.

2021221020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17139 (or 17130 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2021221020200 its reverse (20201221202), we get a palindrome (2041422241402).

The spelling of 2021221020200 in words is "two trillion, twenty-one billion, two hundred twenty-one million, twenty thousand, two hundred".