210121000112201 has 4 divisors (see below), whose sum is σ = 215245902554004. Its totient is φ = 204996097670400.

The previous prime is 210121000112161. The next prime is 210121000112239. The reversal of 210121000112201 is 102211000121012.

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 36903814672201 + 173217185440000 = 6074851^2 + 13161200^2 .

It is a cyclic number.

It is not a de Polignac number, because 210121000112201 - 2³⁰ = 210119926370377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210121000112251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562451220840 + ... + 2562451220921.

It is an arithmetic number, because the mean of its divisors is an integer number (53811475638501).

Almost surely, 2^{210121000112201} is an apocalyptic number.

It is an amenable number.

210121000112201 is a deficient number, since it is larger than the sum of its proper divisors (5124902441803).

210121000112201 is an equidigital number, since it uses as much as digits as its factorization.

210121000112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124902441802.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210121000112201 its reverse (102211000121012), we get a palindrome (312332000233213).

The spelling of 210121000112201 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred twelve thousand, two hundred one".