12201110001 has 32 divisors (see below), whose sum is σ = 19314662400. Its totient is φ = 7585332480.

The previous prime is 12201109993. The next prime is 12201110011. The reversal of 12201110001 is 10001110221.

It is a happy number.

It is not a de Polignac number, because 12201110001 - 2³ = 12201109993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12201110011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71905 + ... + 171966.

It is an arithmetic number, because the mean of its divisors is an integer number (603583200).

Almost surely, 2^12201110001 is an apocalyptic number.

It is an amenable number.

12201110001 is a deficient number, since it is larger than the sum of its proper divisors (7113552399).

12201110001 is a wasteful number, since it uses less digits than its factorization.

12201110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244006 (or 244000 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12201110001 its reverse (10001110221), we get a palindrome (22202220222).

The spelling of 12201110001 in words is "twelve billion, two hundred one million, one hundred ten thousand, one".