11101212011121 has 16 divisors (see below), whose sum is σ = 14805128395200. Its totient is φ = 7399052034048.

The previous prime is 11101212011107. The next prime is 11101212011129. The reversal of 11101212011121 is 12111021210111.

It is not a de Polignac number, because 11101212011121 - 2¹⁴ = 11101211994737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11101212011121.

It is not an unprimeable number, because it can be changed into a prime (11101212011129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443025825 + ... + 443050881.

It is an arithmetic number, because the mean of its divisors is an integer number (925320524700).

Almost surely, 2^{11101212011121} is an apocalyptic number.

It is an amenable number.

11101212011121 is a deficient number, since it is larger than the sum of its proper divisors (3703916384079).

11101212011121 is a wasteful number, since it uses less digits than its factorization.

11101212011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54208.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11101212011121 its reverse (12111021210111), we get a palindrome (23212233221232).

The spelling of 11101212011121 in words is "eleven trillion, one hundred one billion, two hundred twelve million, eleven thousand, one hundred twenty-one".