11111130223121 has 4 divisors (see below), whose sum is σ = 11140918776372. Its totient is φ = 11081341669872.

The previous prime is 11111130223057. The next prime is 11111130223133. The reversal of 11111130223121 is 12132203111111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3454260142096 + 7656870081025 = 1858564^2 + 2767105^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111130223121 - 2⁶ = 11111130223057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111130223093 and 11111130223102.

It is not an unprimeable number, because it can be changed into a prime (11111130223021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14894276066 + ... + 14894276811.

It is an arithmetic number, because the mean of its divisors is an integer number (2785229694093).

Almost surely, 2^{11111130223121} is an apocalyptic number.

It is an amenable number.

11111130223121 is a deficient number, since it is larger than the sum of its proper divisors (29788553251).

11111130223121 is an equidigital number, since it uses as much as digits as its factorization.

11111130223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29788553250.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 11111130223121 its reverse (12132203111111), we get a palindrome (23243333334232).

The spelling of 11111130223121 in words is "eleven trillion, one hundred eleven billion, one hundred thirty million, two hundred twenty-three thousand, one hundred twenty-one".