12201201121 has 12 divisors (see below), whose sum is σ = 13180836240. Its totient is φ = 11288832320.

The previous prime is 12201201091. The next prime is 12201201157. The reversal of 12201201121 is 12110210221.

It is a de Polignac number, because none of the positive numbers 2^k-12201201121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201201421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340735 + ... + 374836.

It is an arithmetic number, because the mean of its divisors is an integer number (1098403020).

Almost surely, 2^12201201121 is an apocalyptic number.

It is an amenable number.

12201201121 is a deficient number, since it is larger than the sum of its proper divisors (979635119).

12201201121 is an equidigital number, since it uses as much as digits as its factorization.

12201201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715664 (or 715647 counting only the distinct ones).

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

Adding to 12201201121 its reverse (12110210221), we get a palindrome (24311411342).

The spelling of 12201201121 in words is "twelve billion, two hundred one million, two hundred one thousand, one hundred twenty-one".