221244133141 has 4 divisors (see below), whose sum is σ = 234258493932. Its totient is φ = 208229772352.

The previous prime is 221244133127. The next prime is 221244133163. The reversal of 221244133141 is 141331442122.

It is a happy number.

221244133141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 149192152516 + 72051980625 = 386254^2 + 268425^2 .

It is a cyclic number.

It is not a de Polignac number, because 221244133141 - 2⁵ = 221244133109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244133181) 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 3 ways as a sum of consecutive naturals, for example, 6507180370 + ... + 6507180403.

It is an arithmetic number, because the mean of its divisors is an integer number (58564623483).

Almost surely, 2^221244133141 is an apocalyptic number.

It is an amenable number.

221244133141 is a deficient number, since it is larger than the sum of its proper divisors (13014360791).

221244133141 is a wasteful number, since it uses less digits than its factorization.

221244133141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13014360790.

The product of its digits is 4608, while the sum is 28.

Adding to 221244133141 its reverse (141331442122), we get a palindrome (362575575263).

The spelling of 221244133141 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred thirty-three thousand, one hundred forty-one".