12121110001111 has 8 divisors (see below), whose sum is σ = 12712318416864. Its totient is φ = 11535251888160.

The previous prime is 12121110001103. The next prime is 12121110001151. The reversal of 12121110001111 is 11110001112121.

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 12121110001111 - 2³ = 12121110001103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121110001091 and 12121110001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121110001151) 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, 1337571060 + ... + 1337580121.

It is an arithmetic number, because the mean of its divisors is an integer number (1589039802108).

Almost surely, 2^{12121110001111} is an apocalyptic number.

12121110001111 is a deficient number, since it is larger than the sum of its proper divisors (591208415753).

12121110001111 is a wasteful number, since it uses less digits than its factorization.

12121110001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675151401.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 12121110001111 its reverse (11110001112121), we get a palindrome (23231111113232).

The spelling of 12121110001111 in words is "twelve trillion, one hundred twenty-one billion, one hundred ten million, one thousand, one hundred eleven".