212201111211 has 4 divisors (see below), whose sum is σ = 282934814952. Its totient is φ = 141467407472.

The previous prime is 212201111191. The next prime is 212201111249. The reversal of 212201111211 is 112111102212.

It is a happy number.

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 212201111211 - 2⁶ = 212201111147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212201111251) 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, 35366851866 + ... + 35366851871.

It is an arithmetic number, because the mean of its divisors is an integer number (70733703738).

Almost surely, 2^212201111211 is an apocalyptic number.

212201111211 is a deficient number, since it is larger than the sum of its proper divisors (70733703741).

212201111211 is an equidigital number, since it uses as much as digits as its factorization.

212201111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70733703740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212201111211 its reverse (112111102212), we get a palindrome (324312213423).

The spelling of 212201111211 in words is "two hundred twelve billion, two hundred one million, one hundred eleven thousand, two hundred eleven".