12010211111 has 4 divisors (see below), whose sum is σ = 12011506752. Its totient is φ = 12008915472.

The previous prime is 12010211099. The next prime is 12010211117. The reversal of 12010211111 is 11111201021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11111201021 = 101399 ⋅109579.

It is a cyclic number.

It is not a de Polignac number, because 12010211111 - 2¹⁰ = 12010210087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010211092 and 12010211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010211117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633815 + ... + 652488.

It is an arithmetic number, because the mean of its divisors is an integer number (3002876688).

Almost surely, 2^12010211111 is an apocalyptic number.

12010211111 is a deficient number, since it is larger than the sum of its proper divisors (1295641).

12010211111 is an equidigital number, since it uses as much as digits as its factorization.

12010211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295640.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12010211111 its reverse (11111201021), we get a palindrome (23121412132).

It can be divided in two parts, 1201021 and 1111, that multiplied together give a palindrome (1334334331).

The spelling of 12010211111 in words is "twelve billion, ten million, two hundred eleven thousand, one hundred eleven".