211200550101 has 24 divisors (see below), whose sum is σ = 314951270400. Its totient is φ = 136239847200.

The previous prime is 211200550097. The next prime is 211200550109. The reversal of 211200550101 is 101055002112.

211200550101 is a `hidden beast` number, since 2 + 1 + 12 + 0 + 0 + 550 + 101 = 666.

It is not a de Polignac number, because 211200550101 - 2² = 211200550097 is a prime.

It is a super-2 number, since 2×211200550101² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200550109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2170156 + ... + 2265386.

It is an arithmetic number, because the mean of its divisors is an integer number (13122969600).

Almost surely, 2^211200550101 is an apocalyptic number.

It is an amenable number.

211200550101 is a deficient number, since it is larger than the sum of its proper divisors (103750720299).

211200550101 is a wasteful number, since it uses less digits than its factorization.

211200550101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103217 (or 103214 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 211200550101 its reverse (101055002112), we get a palindrome (312255552213).

The spelling of 211200550101 in words is "two hundred eleven billion, two hundred million, five hundred fifty thousand, one hundred one".