201223132001 has 4 divisors (see below), whose sum is σ = 201234576900. Its totient is φ = 201211687104.

The previous prime is 201223131971. The next prime is 201223132037. The reversal of 201223132001 is 100231322102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157406595025 + 43816536976 = 396745^2 + 209324^2 .

It is a cyclic number.

It is not a de Polignac number, because 201223132001 - 2¹⁸ = 201222869857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201223152001) 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, 5696036 + ... + 5731253.

It is an arithmetic number, because the mean of its divisors is an integer number (50308644225).

Almost surely, 2^201223132001 is an apocalyptic number.

It is an amenable number.

201223132001 is a deficient number, since it is larger than the sum of its proper divisors (11444899).

201223132001 is a wasteful number, since it uses less digits than its factorization.

201223132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11444898.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201223132001 its reverse (100231322102), we get a palindrome (301454454103).

The spelling of 201223132001 in words is "two hundred one billion, two hundred twenty-three million, one hundred thirty-two thousand, one".