201220102110001 has 8 divisors (see below), whose sum is σ = 216737399492264. Its totient is φ = 185708351583360.

The previous prime is 201220102109881. The next prime is 201220102110011. The reversal of 201220102110001 is 100011201022102.

It can be written as a sum of positive squares in 4 ways, for example, as 6406872192400 + 194813229917601 = 2531180^2 + 13957551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201220102110001 - 2¹¹ = 201220102107953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201220102110011) 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 7 ways as a sum of consecutive naturals, for example, 1386638556 + ... + 1386783661.

It is an arithmetic number, because the mean of its divisors is an integer number (27092174936533).

Almost surely, 2^{201220102110001} is an apocalyptic number.

It is an amenable number.

201220102110001 is a deficient number, since it is larger than the sum of its proper divisors (15517297382263).

201220102110001 is a wasteful number, since it uses less digits than its factorization.

201220102110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773427811.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201220102110001 its reverse (100011201022102), we get a palindrome (301231303132103).

The spelling of 201220102110001 in words is "two hundred one trillion, two hundred twenty billion, one hundred two million, one hundred ten thousand, one".