11201212011211 has 4 divisors (see below), whose sum is σ = 11439535671072. Its totient is φ = 10962888351352.

The previous prime is 11201212011203. The next prime is 11201212011229. The reversal of 11201212011211 is 11211021210211.

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 11201212011211 - 2³ = 11201212011203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201212711211) 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, 119161829860 + ... + 119161829953.

It is an arithmetic number, because the mean of its divisors is an integer number (2859883917768).

Almost surely, 2^{11201212011211} is an apocalyptic number.

11201212011211 is a deficient number, since it is larger than the sum of its proper divisors (238323659861).

11201212011211 is an equidigital number, since it uses as much as digits as its factorization.

11201212011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238323659860.

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

Adding to 11201212011211 its reverse (11211021210211), we get a palindrome (22412233221422).

The spelling of 11201212011211 in words is "eleven trillion, two hundred one billion, two hundred twelve million, eleven thousand, two hundred eleven".