120005111121 has 16 divisors (see below), whose sum is σ = 190815581184. Its totient is φ = 65592855504.

The previous prime is 120005111069. The next prime is 120005111123. The reversal of 120005111121 is 121111500021.

It is not a de Polignac number, because 120005111121 - 2¹⁰ = 120005110097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120005111121.

It is not an unprimeable number, because it can be changed into a prime (120005111123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124228411 + ... + 124229376.

It is an arithmetic number, because the mean of its divisors is an integer number (11925973824).

Almost surely, 2^120005111121 is an apocalyptic number.

It is an amenable number.

120005111121 is a deficient number, since it is larger than the sum of its proper divisors (70810470063).

120005111121 is a wasteful number, since it uses less digits than its factorization.

120005111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248457820.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 120005111121 its reverse (121111500021), we get a palindrome (241116611142).

The spelling of 120005111121 in words is "one hundred twenty billion, five million, one hundred eleven thousand, one hundred twenty-one".