213201212111211 has 4 divisors (see below), whose sum is σ = 284268282814952. Its totient is φ = 142134141407472.

The previous prime is 213201212111183. The next prime is 213201212111399. The reversal of 213201212111211 is 112111212102312.

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

It is not a de Polignac number, because 213201212111211 - 2⁵ = 213201212111179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213201212111611) 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, 35533535351866 + ... + 35533535351871.

It is an arithmetic number, because the mean of its divisors is an integer number (71067070703738).

Almost surely, 2^{213201212111211} is an apocalyptic number.

213201212111211 is a deficient number, since it is larger than the sum of its proper divisors (71067070703741).

213201212111211 is an equidigital number, since it uses as much as digits as its factorization.

213201212111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71067070703740.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 213201212111211 its reverse (112111212102312), we get a palindrome (325312424213523).

The spelling of 213201212111211 in words is "two hundred thirteen trillion, two hundred one billion, two hundred twelve million, one hundred eleven thousand, two hundred eleven".