11212220212211 has 4 divisors (see below), whose sum is σ = 11223223373400. Its totient is φ = 11201217051024.

The previous prime is 11212220212181. The next prime is 11212220212217. The reversal of 11212220212211 is 11221202221211.

11212220212211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11212220212211 - 2⁶ = 11212220212147 is a prime.

It is a super-2 number, since 2×11212220212211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212220212217) 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, 5501579066 + ... + 5501581103.

It is an arithmetic number, because the mean of its divisors is an integer number (2805805843350).

Almost surely, 2^{11212220212211} is an apocalyptic number.

11212220212211 is a deficient number, since it is larger than the sum of its proper divisors (11003161189).

11212220212211 is a wasteful number, since it uses less digits than its factorization.

11212220212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003161188.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11212220212211 its reverse (11221202221211), we get a palindrome (22433422433422).

The spelling of 11212220212211 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, two hundred twelve thousand, two hundred eleven".