221224023201 has 16 divisors (see below), whose sum is σ = 298056024000. Its totient is φ = 145937860608.

The previous prime is 221224023187. The next prime is 221224023211. The reversal of 221224023201 is 102320422122.

221224023201 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 221224023201 - 2¹⁹ = 221223498913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221224023211) 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 15 ways as a sum of consecutive naturals, for example, 1772665 + ... + 1893353.

It is an arithmetic number, because the mean of its divisors is an integer number (18628501500).

Almost surely, 2^221224023201 is an apocalyptic number.

It is an amenable number.

221224023201 is a deficient number, since it is larger than the sum of its proper divisors (76832000799).

221224023201 is a wasteful number, since it uses less digits than its factorization.

221224023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127088.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221224023201 its reverse (102320422122), we get a palindrome (323544445323).

The spelling of 221224023201 in words is "two hundred twenty-one billion, two hundred twenty-four million, twenty-three thousand, two hundred one".