202121120200 has 48 divisors (see below), whose sum is σ = 486136156500. Its totient is φ = 78060568320.

The previous prime is 202121120189. The next prime is 202121120221. The reversal of 202121120200 is 2021121202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 43619993316 + 158501126884 = 208854^2 + 398122^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17418435 + ... + 17430034.

Almost surely, 2^202121120200 is an apocalyptic number.

202121120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202121120200 is an abundant number, since it is smaller than the sum of its proper divisors (284015036300).

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

202121120200 is a wasteful number, since it uses less digits than its factorization.

202121120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34848514 (or 34848505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202121120200 its reverse (2021121202), we get a palindrome (204142241402).

The spelling of 202121120200 in words is "two hundred two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred".