12011220210111 has 8 divisors (see below), whose sum is σ = 16711262901120. Its totient is φ = 7659328829592.

The previous prime is 12011220210089. The next prime is 12011220210233. The reversal of 12011220210111 is 11101202211021.

It is a happy number.

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

It is not a de Polignac number, because 12011220210111 - 2¹⁵ = 12011220177343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011220212111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87037827541 + ... + 87037827678.

It is an arithmetic number, because the mean of its divisors is an integer number (2088907862640).

Almost surely, 2^{12011220210111} is an apocalyptic number.

12011220210111 is a deficient number, since it is larger than the sum of its proper divisors (4700042691009).

12011220210111 is a wasteful number, since it uses less digits than its factorization.

12011220210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174075655245.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011220210111 its reverse (11101202211021), we get a palindrome (23112422421132).

The spelling of 12011220210111 in words is "twelve trillion, eleven billion, two hundred twenty million, two hundred ten thousand, one hundred eleven".