12201210111 has 4 divisors (see below), whose sum is σ = 16268280152. Its totient is φ = 8134140072.

The previous prime is 12201210103. The next prime is 12201210127. The reversal of 12201210111 is 11101210221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11101210221 = 3 ⋅3700403407.

It is not a de Polignac number, because 12201210111 - 2³ = 12201210103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201210191) 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, 2033535016 + ... + 2033535021.

It is an arithmetic number, because the mean of its divisors is an integer number (4067070038).

Almost surely, 2^12201210111 is an apocalyptic number.

12201210111 is a deficient number, since it is larger than the sum of its proper divisors (4067070041).

12201210111 is an equidigital number, since it uses as much as digits as its factorization.

12201210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067070040.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12201210111 its reverse (11101210221), we get a palindrome (23302420332).

The spelling of 12201210111 in words is "twelve billion, two hundred one million, two hundred ten thousand, one hundred eleven".