212100111200011 has 4 divisors (see below), whose sum is σ = 223263274947400. Its totient is φ = 200936947452624.

The previous prime is 212100111199993. The next prime is 212100111200071. The reversal of 212100111200011 is 110002111001212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212100111200011 - 2⁹ = 212100111199499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212100111199964 and 212100111200000.

It is not an unprimeable number, because it can be changed into a prime (212100111200071) 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, 5581581873666 + ... + 5581581873703.

It is an arithmetic number, because the mean of its divisors is an integer number (55815818736850).

Almost surely, 2^{212100111200011} is an apocalyptic number.

212100111200011 is a deficient number, since it is larger than the sum of its proper divisors (11163163747389).

212100111200011 is a wasteful number, since it uses less digits than its factorization.

212100111200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11163163747388.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 212100111200011 its reverse (110002111001212), we get a palindrome (322102222201223).

The spelling of 212100111200011 in words is "two hundred twelve trillion, one hundred billion, one hundred eleven million, two hundred thousand, eleven".