11212220201211 has 12 divisors (see below), whose sum is σ = 16469927979960. Its totient is φ = 7348121713440.

The previous prime is 11212220201191. The next prime is 11212220201213. The reversal of 11212220201211 is 11210202221211.

11212220201211 is a `hidden beast` number, since 1 + 1 + 212 + 220 + 20 + 1 + 211 = 666.

It is not a de Polignac number, because 11212220201211 - 2²⁹ = 11211683330299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212220201213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10557645610 + ... + 10557646671.

It is an arithmetic number, because the mean of its divisors is an integer number (1372493998330).

Almost surely, 2^{11212220201211} is an apocalyptic number.

11212220201211 is a deficient number, since it is larger than the sum of its proper divisors (5257707778749).

11212220201211 is a wasteful number, since it uses less digits than its factorization.

11212220201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21115292346 (or 21115292343 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212220201211 its reverse (11210202221211), we get a palindrome (22422422422422).

The spelling of 11212220201211 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, two hundred one thousand, two hundred eleven".