221221432230201 has 48 divisors (see below), whose sum is σ = 349638580287360. Its totient is φ = 133970824454400.

The previous prime is 221221432230179. The next prime is 221221432230299. The reversal of 221221432230201 is 102032234122122.

221221432230201 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 2 + 1 + 432 + 23 + 0 + 201 = 666.

It is not a de Polignac number, because 221221432230201 - 2¹⁹ = 221221431705913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221221432235201) 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 47 ways as a sum of consecutive naturals, for example, 56622396 + ... + 60403133.

It is an arithmetic number, because the mean of its divisors is an integer number (7284137089320).

Almost surely, 2^{221221432230201} is an apocalyptic number.

It is an amenable number.

221221432230201 is a deficient number, since it is larger than the sum of its proper divisors (128417148057159).

221221432230201 is a wasteful number, since it uses less digits than its factorization.

221221432230201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117025806 (or 117025803 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 221221432230201 its reverse (102032234122122), we get a palindrome (323253666352323).

The spelling of 221221432230201 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, four hundred thirty-two million, two hundred thirty thousand, two hundred one".