221223201201 has 24 divisors (see below), whose sum is σ = 336381487520. Its totient is φ = 139712138496.

The previous prime is 221223201193. The next prime is 221223201217. The reversal of 221223201201 is 102102322122.

221223201201 is a `hidden beast` number, since 22 + 122 + 320 + 1 + 201 = 666.

221223201201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221223201201 - 2³ = 221223201193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221223200201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5841810 + ... + 5879556.

Almost surely, 2^221223201201 is an apocalyptic number.

It is an amenable number.

221223201201 is a deficient number, since it is larger than the sum of its proper divisors (115158286319).

221223201201 is a wasteful number, since it uses less digits than its factorization.

221223201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72045 (or 72042 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221223201201 its reverse (102102322122), we get a palindrome (323325523323).

The spelling of 221223201201 in words is "two hundred twenty-one billion, two hundred twenty-three million, two hundred one thousand, two hundred one".