12120111212110 has 64 divisors (see below), whose sum is σ = 24058692923328. Its totient is φ = 4359398400000.

The previous prime is 12120111212101. The next prime is 12120111212117. The reversal of 12120111212110 is 1121211102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120111212117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10809070 + ... + 11877550.

It is an arithmetic number, because the mean of its divisors is an integer number (375917076927).

Almost surely, 2^{12120111212110} is an apocalyptic number.

12120111212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120111212110 is a deficient number, since it is larger than the sum of its proper divisors (11938581711218).

12120111212110 is a wasteful number, since it uses less digits than its factorization.

12120111212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069621.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12120111212110 its reverse (1121211102121), we get a palindrome (13241322314231).

It can be divided in two parts, 121201 and 11212110, that added together give a palindrome (11333311).

The spelling of 12120111212110 in words is "twelve trillion, one hundred twenty billion, one hundred eleven million, two hundred twelve thousand, one hundred ten".