12120120111 has 8 divisors (see below), whose sum is σ = 17629265664. Its totient is φ = 7345527320.

The previous prime is 12120120091. The next prime is 12120120161. The reversal of 12120120111 is 11102102121.

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 12120120111 - 2⁵ = 12120120079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120120161) 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, 183638151 + ... + 183638216.

It is an arithmetic number, because the mean of its divisors is an integer number (2203658208).

Almost surely, 2^12120120111 is an apocalyptic number.

12120120111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12120120111 is a deficient number, since it is larger than the sum of its proper divisors (5509145553).

12120120111 is a wasteful number, since it uses less digits than its factorization.

12120120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367276381.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12120120111 its reverse (11102102121), we get a palindrome (23222222232).

It can be divided in two parts, 12120 and 120111, that added together give a palindrome (132231).

The spelling of 12120120111 in words is "twelve billion, one hundred twenty million, one hundred twenty thousand, one hundred eleven".