12001220201 has 16 divisors (see below), whose sum is σ = 12326624064. Its totient is φ = 11679754944.

The previous prime is 12001220197. The next prime is 12001220233. The reversal of 12001220201 is 10202210021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12001220201 - 2² = 12001220197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001220281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7879226 + ... + 7880748.

It is an arithmetic number, because the mean of its divisors is an integer number (770414004).

Almost surely, 2^12001220201 is an apocalyptic number.

It is an amenable number.

12001220201 is a deficient number, since it is larger than the sum of its proper divisors (325403863).

12001220201 is a wasteful number, since it uses less digits than its factorization.

12001220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12001220201 its reverse (10202210021), we get a palindrome (22203430222).

The spelling of 12001220201 in words is "twelve billion, one million, two hundred twenty thousand, two hundred one".