12012020222111 has 24 divisors (see below), whose sum is σ = 15062182367904. Its totient is φ = 9495074715840.

The previous prime is 12012020222107. The next prime is 12012020222123. The reversal of 12012020222111 is 11122202021021.

12012020222111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12012020222111 - 2² = 12012020222107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12012020222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012020222611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8192660 + ... + 9546921.

It is an arithmetic number, because the mean of its divisors is an integer number (627590931996).

Almost surely, 2^{12012020222111} is an apocalyptic number.

12012020222111 is a deficient number, since it is larger than the sum of its proper divisors (3050162145793).

12012020222111 is a wasteful number, since it uses less digits than its factorization.

12012020222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17740671 (or 17740664 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12012020222111 its reverse (11122202021021), we get a palindrome (23134222243132).

The spelling of 12012020222111 in words is "twelve trillion, twelve billion, twenty million, two hundred twenty-two thousand, one hundred eleven".