212100221120011 has 4 divisors (see below), whose sum is σ = 242400252708592. Its totient is φ = 181800189531432.

The previous prime is 212100221120009. The next prime is 212100221120093. The reversal of 212100221120011 is 110021122001212.

212100221120011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 212100221120011 - 2¹ = 212100221120009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100221126011) 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, 15150015794280 + ... + 15150015794293.

It is an arithmetic number, because the mean of its divisors is an integer number (60600063177148).

Almost surely, 2^{212100221120011} is an apocalyptic number.

212100221120011 is a deficient number, since it is larger than the sum of its proper divisors (30300031588581).

212100221120011 is an equidigital number, since it uses as much as digits as its factorization.

212100221120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30300031588580.

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

Adding to 212100221120011 its reverse (110021122001212), we get a palindrome (322121343121223).

The spelling of 212100221120011 in words is "two hundred twelve trillion, one hundred billion, two hundred twenty-one million, one hundred twenty thousand, eleven".