221244225213 has 32 divisors (see below), whose sum is σ = 340805888640. Its totient is φ = 126175426560.

The previous prime is 221244225149. The next prime is 221244225217. The reversal of 221244225213 is 312522442122.

It is not a de Polignac number, because 221244225213 - 2⁶ = 221244225149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244225217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3081993 + ... + 3152961.

It is an arithmetic number, because the mean of its divisors is an integer number (10650184020).

Almost surely, 2^221244225213 is an apocalyptic number.

It is an amenable number.

221244225213 is a deficient number, since it is larger than the sum of its proper divisors (119561663427).

221244225213 is a wasteful number, since it uses less digits than its factorization.

221244225213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76557.

The product of its digits is 15360, while the sum is 30.

Adding to 221244225213 its reverse (312522442122), we get a palindrome (533766667335).

The spelling of 221244225213 in words is "two hundred twenty-one billion, two hundred forty-four million, two hundred twenty-five thousand, two hundred thirteen".