11221211111101 has 16 divisors (see below), whose sum is σ = 12193711782400. Its totient is φ = 10286951270400.

The previous prime is 11221211111087. The next prime is 11221211111137. The reversal of 11221211111101 is 10111111212211.

It is a cyclic number.

It is not a de Polignac number, because 11221211111101 - 2²³ = 11221202722493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221211111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7515205 + ... + 8883733.

It is an arithmetic number, because the mean of its divisors is an integer number (762106986400).

Almost surely, 2^{11221211111101} is an apocalyptic number.

It is an amenable number.

11221211111101 is a deficient number, since it is larger than the sum of its proper divisors (972500671299).

11221211111101 is a wasteful number, since it uses less digits than its factorization.

11221211111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382500.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11221211111101 its reverse (10111111212211), we get a palindrome (21332322323312).

The spelling of 11221211111101 in words is "eleven trillion, two hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred one".