11220131111121 has 32 divisors (see below), whose sum is σ = 16814637936000. Its totient is φ = 7393642274304.

The previous prime is 11220131111099. The next prime is 11220131111129. The reversal of 11220131111121 is 12111113102211.

11220131111121 is a `hidden beast` number, since 1 + 1 + 220 + 1 + 311 + 11 + 121 = 666.

11220131111121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11220131111121 - 2¹⁵ = 11220131078353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220131111094 and 11220131111103.

It is not an unprimeable number, because it can be changed into a prime (11220131111129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6667086 + ... + 8178648.

It is an arithmetic number, because the mean of its divisors is an integer number (525457435500).

Almost surely, 2^{11220131111121} is an apocalyptic number.

It is an amenable number.

11220131111121 is a deficient number, since it is larger than the sum of its proper divisors (5594506824879).

11220131111121 is a wasteful number, since it uses less digits than its factorization.

11220131111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514750 (or 1514744 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 11220131111121 its reverse (12111113102211), we get a palindrome (23331244213332).

The spelling of 11220131111121 in words is "eleven trillion, two hundred twenty billion, one hundred thirty-one million, one hundred eleven thousand, one hundred twenty-one".