202020221121100 has 36 divisors (see below), whose sum is σ = 461456715617800. Its totient is φ = 76555031160960.

The previous prime is 202020221121053. The next prime is 202020221121101. The reversal of 202020221121100 is 1121122020202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (202020221121101) 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, 53163214185 + ... + 53163217984.

Almost surely, 2^{202020221121100} is an apocalyptic number.

202020221121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020221121100 is an abundant number, since it is smaller than the sum of its proper divisors (259436494496700).

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

202020221121100 is a wasteful number, since it uses less digits than its factorization.

202020221121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106326432202 (or 106326432195 counting only the distinct ones).

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

Adding to 202020221121100 its reverse (1121122020202), we get a palindrome (203141343141302).

The spelling of 202020221121100 in words is "two hundred two trillion, twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred".