11221212210211 has 8 divisors (see below), whose sum is σ = 11881340761680. Its totient is φ = 10561090019328.

The previous prime is 11221212210203. The next prime is 11221212210239. The reversal of 11221212210211 is 11201221212211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11221212210211 - 2³ = 11221212210203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221212211211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2316195 + ... + 5273251.

It is an arithmetic number, because the mean of its divisors is an integer number (1485167595210).

Almost surely, 2^{11221212210211} is an apocalyptic number.

11221212210211 is a deficient number, since it is larger than the sum of its proper divisors (660128551469).

11221212210211 is a wasteful number, since it uses less digits than its factorization.

11221212210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180293.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11221212210211 its reverse (11201221212211), we get a palindrome (22422433422422).

The spelling of 11221212210211 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, two hundred ten thousand, two hundred eleven".