202121101220200 has 96 divisors (see below), whose sum is σ = 503998098976800. Its totient is φ = 75148103496960.

The previous prime is 202121101220189. The next prime is 202121101220263. The reversal of 202121101220200 is 2022101121202.

It is a happy number.

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, 501588822 + ... + 501991621.

It is an arithmetic number, because the mean of its divisors is an integer number (5249980197675).

Almost surely, 2^{202121101220200} is an apocalyptic number.

202121101220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202121101220200 is an abundant number, since it is smaller than the sum of its proper divisors (301876997756600).

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

202121101220200 is a wasteful number, since it uses less digits than its factorization.

202121101220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003580531 (or 1003580522 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202121101220200 its reverse (2022101121202), we get a palindrome (204143202341402).

The spelling of 202121101220200 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty thousand, two hundred".