201321020200 has 24 divisors (see below), whose sum is σ = 468071372430. Its totient is φ = 80528408000.

The previous prime is 201321020191. The next prime is 201321020231. The reversal of 201321020200 is 2020123102.

It can be written as a sum of positive squares in 3 ways, for example, as 195595676644 + 5725343556 = 442262^2 + 75666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503302351 + ... + 503302750.

Almost surely, 2^201321020200 is an apocalyptic number.

201321020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201321020200 is an abundant number, since it is smaller than the sum of its proper divisors (266750352230).

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

201321020200 is a wasteful number, since it uses less digits than its factorization.

201321020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006605117 (or 1006605108 counting only the distinct ones).

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

Adding to 201321020200 its reverse (2020123102), we get a palindrome (203341143302).

The spelling of 201321020200 in words is "two hundred one billion, three hundred twenty-one million, twenty thousand, two hundred".