11110012120121 has 8 divisors (see below), whose sum is σ = 11770590532680. Its totient is φ = 10450216850688.

The previous prime is 11110012120049. The next prime is 11110012120147. The reversal of 11110012120121 is 12102121001111.

It can be written as a sum of positive squares in 4 ways, for example, as 1787004830521 + 9323007289600 = 1336789^2 + 3053360^2 .

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 11110012120121 - 2²² = 11110007925817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110012120096 and 11110012120105.

It is not an unprimeable number, because it can be changed into a prime (11110012120321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195756566 + ... + 195813311.

It is an arithmetic number, because the mean of its divisors is an integer number (1471323816585).

Almost surely, 2^{11110012120121} is an apocalyptic number.

It is an amenable number.

11110012120121 is a deficient number, since it is larger than the sum of its proper divisors (660578412559).

11110012120121 is a wasteful number, since it uses less digits than its factorization.

11110012120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391571563.

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

Adding to 11110012120121 its reverse (12102121001111), we get a palindrome (23212133121232).

The spelling of 11110012120121 in words is "eleven trillion, one hundred ten billion, twelve million, one hundred twenty thousand, one hundred twenty-one".