210012121221201 has 96 divisors (see below), whose sum is σ = 330421245493248. Its totient is φ = 127770376199040.

The previous prime is 210012121221187. The next prime is 210012121221223. The reversal of 210012121221201 is 102122121210012.

210012121221201 is a `hidden beast` number, since 2 + 100 + 121 + 21 + 221 + 201 = 666.

It is not a de Polignac number, because 210012121221201 - 2¹⁵ = 210012121188433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210012121221101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3108171720 + ... + 3108239286.

It is an arithmetic number, because the mean of its divisors is an integer number (3441887973888).

Almost surely, 2^{210012121221201} is an apocalyptic number.

It is an amenable number.

210012121221201 is a deficient number, since it is larger than the sum of its proper divisors (120409124272047).

210012121221201 is a wasteful number, since it uses less digits than its factorization.

210012121221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68611 (or 68608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210012121221201 its reverse (102122121210012), we get a palindrome (312134242431213).

The spelling of 210012121221201 in words is "two hundred ten trillion, twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred one".