12120245211 has 4 divisors (see below), whose sum is σ = 16160326952. Its totient is φ = 8080163472.

The previous prime is 12120245167. The next prime is 12120245213. The reversal of 12120245211 is 11254202121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11254202121 = 3 ⋅3751400707.

It is not a de Polignac number, because 12120245211 - 2⁷ = 12120245083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120245213) 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, 2020040866 + ... + 2020040871.

It is an arithmetic number, because the mean of its divisors is an integer number (4040081738).

Almost surely, 2^12120245211 is an apocalyptic number.

12120245211 is a deficient number, since it is larger than the sum of its proper divisors (4040081741).

12120245211 is an equidigital number, since it uses as much as digits as its factorization.

12120245211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040081740.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 12120245211 its reverse (11254202121), we get a palindrome (23374447332).

The spelling of 12120245211 in words is "twelve billion, one hundred twenty million, two hundred forty-five thousand, two hundred eleven".