11211222101211 has 64 divisors (see below), whose sum is σ = 19179851328000. Its totient is φ = 6407813543040.

The previous prime is 11211222101179. The next prime is 11211222101237. The reversal of 11211222101211 is 11210122211211.

It is a happy number.

11211222101211 is a `hidden beast` number, since 1 + 121 + 122 + 210 + 1 + 211 = 666.

It is not a de Polignac number, because 11211222101211 - 2⁵ = 11211222101179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211222001211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14765256 + ... + 15505973.

It is an arithmetic number, because the mean of its divisors is an integer number (299685177000).

Almost surely, 2^{11211222101211} is an apocalyptic number.

11211222101211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11211222101211 is a deficient number, since it is larger than the sum of its proper divisors (7968629226789).

11211222101211 is a wasteful number, since it uses less digits than its factorization.

11211222101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30271321 (or 30271315 counting only the distinct ones).

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

Adding to 11211222101211 its reverse (11210122211211), we get a palindrome (22421344312422).

The spelling of 11211222101211 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, one hundred one thousand, two hundred eleven".