211200110002221 has 16 divisors (see below), whose sum is σ = 285583581509760. Its totient is φ = 138808595298240.

The previous prime is 211200110002183. The next prime is 211200110002247. The reversal of 211200110002221 is 122200011002112.

It is not a de Polignac number, because 211200110002221 - 2⁹ = 211200110001709 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211200110002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200110052221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26384566 + ... + 33444663.

It is an arithmetic number, because the mean of its divisors is an integer number (17848973844360).

Almost surely, 2^{211200110002221} is an apocalyptic number.

It is an amenable number.

211200110002221 is a deficient number, since it is larger than the sum of its proper divisors (74383471507539).

211200110002221 is a wasteful number, since it uses less digits than its factorization.

211200110002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59845876.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211200110002221 its reverse (122200011002112), we get a palindrome (333400121004333).

The spelling of 211200110002221 in words is "two hundred eleven trillion, two hundred billion, one hundred ten million, two thousand, two hundred twenty-one".