12020112211 has 4 divisors (see below), whose sum is σ = 12023260192. Its totient is φ = 12016964232.

The previous prime is 12020112197. The next prime is 12020112227. The reversal of 12020112211 is 11221102021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020112211 - 2⁹ = 12020111699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020112191 and 12020112200.

It is not an unprimeable number, because it can be changed into a prime (12020152211) 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, 1568256 + ... + 1575901.

It is an arithmetic number, because the mean of its divisors is an integer number (3005815048).

Almost surely, 2^12020112211 is an apocalyptic number.

12020112211 is a deficient number, since it is larger than the sum of its proper divisors (3147981).

12020112211 is an equidigital number, since it uses as much as digits as its factorization.

12020112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147980.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12020112211 its reverse (11221102021), we get a palindrome (23241214232).

The spelling of 12020112211 in words is "twelve billion, twenty million, one hundred twelve thousand, two hundred eleven".