211110002221201 has 4 divisors (see below), whose sum is σ = 211110214960692. Its totient is φ = 211109789481712.

The previous prime is 211110002221199. The next prime is 211110002221219. The reversal of 211110002221201 is 102122200011112.

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 104302407251025 + 106807594970176 = 10212855^2 + 10334776^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110002221201 - 2¹ = 211110002221199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211110002221241) 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, 104874226 + ... + 106868251.

It is an arithmetic number, because the mean of its divisors is an integer number (52777553740173).

Almost surely, 2^{211110002221201} is an apocalyptic number.

It is an amenable number.

211110002221201 is a deficient number, since it is larger than the sum of its proper divisors (212739491).

211110002221201 is an equidigital number, since it uses as much as digits as its factorization.

211110002221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212739490.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211110002221201 its reverse (102122200011112), we get a palindrome (313232202232313).

The spelling of 211110002221201 in words is "two hundred eleven trillion, one hundred ten billion, two million, two hundred twenty-one thousand, two hundred one".