120111110121 has 16 divisors (see below), whose sum is σ = 162199132160. Its totient is φ = 79048878480.

The previous prime is 120111110059. The next prime is 120111110159. The reversal of 120111110121 is 121011111021.

It is not a de Polignac number, because 120111110121 - 2¹⁵ = 120111077353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120111110097 and 120111110106.

It is not an unprimeable number, because it can be changed into a prime (120111110221) 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, 1765686 + ... + 1832448.

It is an arithmetic number, because the mean of its divisors is an integer number (10137445760).

Almost surely, 2^120111110121 is an apocalyptic number.

It is an amenable number.

120111110121 is a deficient number, since it is larger than the sum of its proper divisors (42088022039).

120111110121 is an equidigital number, since it uses as much as digits as its factorization.

120111110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74436.

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

Adding to 120111110121 its reverse (121011111021), we get a palindrome (241122221142).

The spelling of 120111110121 in words is "one hundred twenty billion, one hundred eleven million, one hundred ten thousand, one hundred twenty-one".