200201221102121 has 4 divisors (see below), whose sum is σ = 200705506294212. Its totient is φ = 199696935910032.

The previous prime is 200201221102081. The next prime is 200201221102133. The reversal of 200201221102121 is 121201122102002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82653644874025 + 117547576228096 = 9091405^2 + 10841936^2 .

It is a cyclic number.

It is not a de Polignac number, because 200201221102121 - 2³⁸ = 199926343195177 is a prime.

It is a super-3 number, since 3×200201221102121³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200201221102121.

It is not an unprimeable number, because it can be changed into a prime (200201221002121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252142595450 + ... + 252142596243.

It is an arithmetic number, because the mean of its divisors is an integer number (50176376573553).

Almost surely, 2^{200201221102121} is an apocalyptic number.

It is an amenable number.

200201221102121 is a deficient number, since it is larger than the sum of its proper divisors (504285192091).

200201221102121 is an equidigital number, since it uses as much as digits as its factorization.

200201221102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504285192090.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200201221102121 its reverse (121201122102002), we get a palindrome (321402343204123).

The spelling of 200201221102121 in words is "two hundred trillion, two hundred one billion, two hundred twenty-one million, one hundred two thousand, one hundred twenty-one".