11121100012121 has 8 divisors (see below), whose sum is σ = 12143522201664. Its totient is φ = 10100580005520.

The previous prime is 11121100012103. The next prime is 11121100012129. The reversal of 11121100012121 is 12121000112111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11121100012121 - 2²⁶ = 11121032903257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11121100012096 and 11121100012105.

It is not an unprimeable number, because it can be changed into a prime (11121100012129) 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 7 ways as a sum of consecutive naturals, for example, 475533506 + ... + 475556891.

It is an arithmetic number, because the mean of its divisors is an integer number (1517940275208).

Almost surely, 2^{11121100012121} is an apocalyptic number.

11121100012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11121100012121 is a deficient number, since it is larger than the sum of its proper divisors (1022422189543).

11121100012121 is a wasteful number, since it uses less digits than its factorization.

11121100012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951091471.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121100012121 its reverse (12121000112111), we get a palindrome (23242100124232).

The spelling of 11121100012121 in words is "eleven trillion, one hundred twenty-one billion, one hundred million, twelve thousand, one hundred twenty-one".