11011211212211 has 32 divisors (see below), whose sum is σ = 12750248015232. Its totient is φ = 9314252881920.

The previous prime is 11011211212189. The next prime is 11011211212231. The reversal of 11011211212211 is 11221211211011.

It is not a de Polignac number, because 11011211212211 - 2³⁴ = 10994031343027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011211212211.

It is not an unprimeable number, because it can be changed into a prime (11011211212231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 690913235 + ... + 690929171.

It is an arithmetic number, because the mean of its divisors is an integer number (398445250476).

Almost surely, 2^{11011211212211} is an apocalyptic number.

11011211212211 is a deficient number, since it is larger than the sum of its proper divisors (1739036803021).

11011211212211 is a wasteful number, since it uses less digits than its factorization.

11011211212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18879.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11011211212211 its reverse (11221211211011), we get a palindrome (22232422423222).

The spelling of 11011211212211 in words is "eleven trillion, eleven billion, two hundred eleven million, two hundred twelve thousand, two hundred eleven".