11120121120121 has 4 divisors (see below), whose sum is σ = 11975515052452. Its totient is φ = 10264727187792.

The previous prime is 11120121120077. The next prime is 11120121120127. The reversal of 11120121120121 is 12102112102111.

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 4012890368400 + 7107230751721 = 2003220^2 + 2665939^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120121120121 - 2³³ = 11111531185529 is a prime.

It is a super-2 number, since 2×11120121120121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120121120095 and 11120121120104.

It is not an unprimeable number, because it can be changed into a prime (11120121120127) 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 3 ways as a sum of consecutive naturals, for example, 427696966146 + ... + 427696966171.

It is an arithmetic number, because the mean of its divisors is an integer number (2993878763113).

Almost surely, 2^{11120121120121} is an apocalyptic number.

It is an amenable number.

11120121120121 is a deficient number, since it is larger than the sum of its proper divisors (855393932331).

11120121120121 is an equidigital number, since it uses as much as digits as its factorization.

11120121120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855393932330.

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

Adding to 11120121120121 its reverse (12102112102111), we get a palindrome (23222233222232).

The spelling of 11120121120121 in words is "eleven trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".