12120012111011 has 64 divisors (see below), whose sum is σ = 15125822841600. Its totient is φ = 9672929280000.

The previous prime is 12120012111007. The next prime is 12120012111013. The reversal of 12120012111011 is 11011121002121.

It is not a de Polignac number, because 12120012111011 - 2² = 12120012111007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12120012111013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 801527531 + ... + 801542651.

It is an arithmetic number, because the mean of its divisors is an integer number (236340981900).

Almost surely, 2^{12120012111011} is an apocalyptic number.

12120012111011 is a deficient number, since it is larger than the sum of its proper divisors (3005810730589).

12120012111011 is a wasteful number, since it uses less digits than its factorization.

12120012111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16621 (or 16607 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12120012111011 its reverse (11011121002121), we get a palindrome (23131133113132).

The spelling of 12120012111011 in words is "twelve trillion, one hundred twenty billion, twelve million, one hundred eleven thousand, eleven".