12020011111 has 8 divisors (see below), whose sum is σ = 12256886304. Its totient is φ = 11785447200.

The previous prime is 12020011051. The next prime is 12020011121. The reversal of 12020011111 is 11111002021.

12020011111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12020011111 - 2¹⁹ = 12019486823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567316 + ... + 588121.

It is an arithmetic number, because the mean of its divisors is an integer number (1532110788).

Almost surely, 2^12020011111 is an apocalyptic number.

12020011111 is a deficient number, since it is larger than the sum of its proper divisors (236875193).

12020011111 is a wasteful number, since it uses less digits than its factorization.

12020011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155641.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12020011111 its reverse (11111002021), we get a palindrome (23131013132).

The spelling of 12020011111 in words is "twelve billion, twenty million, eleven thousand, one hundred eleven".