12001220010111 has 16 divisors (see below), whose sum is σ = 16110111744000. Its totient is φ = 7946578086048.

The previous prime is 12001220010077. The next prime is 12001220010121. The reversal of 12001220010111 is 11101002210021.

It is not a de Polignac number, because 12001220010111 - 2⁹ = 12001220009599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001220010121) 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, 5748690 + ... + 7553136.

It is an arithmetic number, because the mean of its divisors is an integer number (1006881984000).

Almost surely, 2^{12001220010111} is an apocalyptic number.

12001220010111 is a deficient number, since it is larger than the sum of its proper divisors (4108891733889).

12001220010111 is a wasteful number, since it uses less digits than its factorization.

12001220010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819478.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12001220010111 its reverse (11101002210021), we get a palindrome (23102222220132).

The spelling of 12001220010111 in words is "twelve trillion, one billion, two hundred twenty million, ten thousand, one hundred eleven".