12120110001111 has 16 divisors (see below), whose sum is σ = 18468819417600. Its totient is φ = 6925747005408.

The previous prime is 12120110001059. The next prime is 12120110001157. The reversal of 12120110001111 is 11110001102121.

It is not a de Polignac number, because 12120110001111 - 2⁴² = 7722063490007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120110001511) 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, 4245430 + ... + 6501068.

It is an arithmetic number, because the mean of its divisors is an integer number (1154301213600).

Almost surely, 2^{12120110001111} is an apocalyptic number.

12120110001111 is a deficient number, since it is larger than the sum of its proper divisors (6348709416489).

12120110001111 is a wasteful number, since it uses less digits than its factorization.

12120110001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511518.

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

Adding to 12120110001111 its reverse (11110001102121), we get a palindrome (23230111103232).

The spelling of 12120110001111 in words is "twelve trillion, one hundred twenty billion, one hundred ten million, one thousand, one hundred eleven".