121011113 has 8 divisors (see below), whose sum is σ = 125728200. Its totient is φ = 116330368.

The previous prime is 121011109. The next prime is 121011181. The reversal of 121011113 is 311110121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5513104 + 115498009 = 2348^2 + 10747^2 .

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

It is not a de Polignac number, because 121011113 - 2² = 121011109 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 = 121011094 and 121011103.

It is not an unprimeable number, because it can be changed into a prime (121011013) 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 7 ways as a sum of consecutive naturals, for example, 2198 + ... + 15711.

It is an arithmetic number, because the mean of its divisors is an integer number (15716025).

Almost surely, 2^121011113 is an apocalyptic number.

It is an amenable number.

121011113 is a deficient number, since it is larger than the sum of its proper divisors (4717087).

121011113 is a wasteful number, since it uses less digits than its factorization.

121011113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18171.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 121011113 is about 11000.5051247659. The cubic root of 121011113 is about 494.6238859742.

Adding to 121011113 its reverse (311110121), we get a palindrome (432121234).

The spelling of 121011113 in words is "one hundred twenty-one million, eleven thousand, one hundred thirteen".