221244133241 has 4 divisors (see below), whose sum is σ = 223525000692. Its totient is φ = 218963265792.

The previous prime is 221244133219. The next prime is 221244133291. The reversal of 221244133241 is 142331442122.

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 131710926400 + 89533206841 = 362920^2 + 299221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221244133241 is a prime.

It is a super-2 number, since 2×221244133241² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221244133291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140433580 + ... + 1140433773.

It is an arithmetic number, because the mean of its divisors is an integer number (55881250173).

Almost surely, 2^221244133241 is an apocalyptic number.

It is an amenable number.

221244133241 is a deficient number, since it is larger than the sum of its proper divisors (2280867451).

221244133241 is an equidigital number, since it uses as much as digits as its factorization.

221244133241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280867450.

The product of its digits is 9216, while the sum is 29.

Adding to 221244133241 its reverse (142331442122), we get a palindrome (363575575363).

The spelling of 221244133241 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred thirty-three thousand, two hundred forty-one".