211102201220201 has 4 divisors (see below), whose sum is σ = 211102548880212. Its totient is φ = 211101853560192.

The previous prime is 211102201220123. The next prime is 211102201220221. The reversal of 211102201220201 is 102022102201112.

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 72228326625625 + 138873874594576 = 8498725^2 + 11784476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211102201220201 is a prime.

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 211102201220201.

It is not an unprimeable number, because it can be changed into a prime (211102201220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172917596 + ... + 174134141.

It is an arithmetic number, because the mean of its divisors is an integer number (52775637220053).

Almost surely, 2^{211102201220201} is an apocalyptic number.

It is an amenable number.

211102201220201 is a deficient number, since it is larger than the sum of its proper divisors (347660011).

211102201220201 is an equidigital number, since it uses as much as digits as its factorization.

211102201220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347660010.

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

Adding to 211102201220201 its reverse (102022102201112), we get a palindrome (313124303421313).

The spelling of 211102201220201 in words is "two hundred eleven trillion, one hundred two billion, two hundred one million, two hundred twenty thousand, two hundred one".