120120111111 has 144 divisors (see below), whose sum is σ = 221961005952. Its totient is φ = 57228716160.

The previous prime is 120120111101. The next prime is 120120111173. The reversal of 120120111111 is 111111021021.

It is not a de Polignac number, because 120120111111 - 2⁹ = 120120110599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120120111101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 37689060 + ... + 37692246.

Almost surely, 2^120120111111 is an apocalyptic number.

120120111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120120111111 is a deficient number, since it is larger than the sum of its proper divisors (101840894841).

120120111111 is a wasteful number, since it uses less digits than its factorization.

120120111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402 (or 3384 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 120120111111 its reverse (111111021021), we get a palindrome (231231132132).

The spelling of 120120111111 in words is "one hundred twenty billion, one hundred twenty million, one hundred eleven thousand, one hundred eleven".