120000121111 has 16 divisors (see below), whose sum is σ = 130561377408. Its totient is φ = 109629792000.

The previous prime is 120000121099. The next prime is 120000121117. The reversal of 120000121111 is 111121000021.

It is a cyclic number.

It is not a de Polignac number, because 120000121111 - 2¹⁹ = 119999596823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120000121117) 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 15 ways as a sum of consecutive naturals, for example, 3629746 + ... + 3662656.

It is an arithmetic number, because the mean of its divisors is an integer number (8160086088).

Almost surely, 2^120000121111 is an apocalyptic number.

120000121111 is a deficient number, since it is larger than the sum of its proper divisors (10561256297).

120000121111 is a wasteful number, since it uses less digits than its factorization.

120000121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35802.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 120000121111 its reverse (111121000021), we get a palindrome (231121121132).

The spelling of 120000121111 in words is "one hundred twenty billion, one hundred twenty-one thousand, one hundred eleven".