12020201111 has 4 divisors (see below), whose sum is σ = 12022216824. Its totient is φ = 12018185400.

The previous prime is 12020201099. The next prime is 12020201161. The reversal of 12020201111 is 11110202021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11110202021 = 104281 ⋅106541.

It is a cyclic number.

It is not a de Polignac number, because 12020201111 - 2¹⁴ = 12020184727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020201092 and 12020201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020201161) 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, 998885 + ... + 1010846.

It is an arithmetic number, because the mean of its divisors is an integer number (3005554206).

Almost surely, 2^12020201111 is an apocalyptic number.

12020201111 is a deficient number, since it is larger than the sum of its proper divisors (2015713).

12020201111 is an equidigital number, since it uses as much as digits as its factorization.

12020201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015712.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12020201111 its reverse (11110202021), we get a palindrome (23130403132).

The spelling of 12020201111 in words is "twelve billion, twenty million, two hundred one thousand, one hundred eleven".