11011212212211 has 12 divisors (see below), whose sum is σ = 15905287332792. Its totient is φ = 7340714437056.

The previous prime is 11011212212201. The next prime is 11011212212387. The reversal of 11011212212211 is 11221221211011.

It is a happy number.

11011212212211 is a `hidden beast` number, since 1 + 101 + 121 + 221 + 221 + 1 = 666.

It is not a de Polignac number, because 11011212212211 - 2¹³ = 11011212204019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11011212212201) 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, 7060701 + ... + 8477966.

It is an arithmetic number, because the mean of its divisors is an integer number (1325440611066).

Almost surely, 2^{11011212212211} is an apocalyptic number.

11011212212211 is a deficient number, since it is larger than the sum of its proper divisors (4894075120581).

11011212212211 is a wasteful number, since it uses less digits than its factorization.

11011212212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15617410 (or 15617407 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11011212212211 its reverse (11221221211011), we get a palindrome (22232433423222).

The spelling of 11011212212211 in words is "eleven trillion, eleven billion, two hundred twelve million, two hundred twelve thousand, two hundred eleven".