12120012001111 has 16 divisors (see below), whose sum is σ = 13998594804480. Its totient is φ = 10278687968640.

The previous prime is 12120012001109. The next prime is 12120012001117. The reversal of 12120012001111 is 11110021002121.

It is a happy number.

It is not a de Polignac number, because 12120012001111 - 2¹ = 12120012001109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120012001091 and 12120012001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120012001117) 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, 19300801 + ... + 19918858.

It is an arithmetic number, because the mean of its divisors is an integer number (874912175280).

Almost surely, 2^{12120012001111} is an apocalyptic number.

12120012001111 is a deficient number, since it is larger than the sum of its proper divisors (1878582803369).

12120012001111 is a wasteful number, since it uses less digits than its factorization.

12120012001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39220134.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12120012001111 its reverse (11110021002121), we get a palindrome (23230033003232).

The spelling of 12120012001111 in words is "twelve trillion, one hundred twenty billion, twelve million, one thousand, one hundred eleven".