11355344221 has 8 divisors (see below), whose sum is σ = 12246746400. Its totient is φ = 10466501232.

The previous prime is 11355344219. The next prime is 11355344267. The reversal of 11355344221 is 12244355311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11355344221 - 2¹ = 11355344219 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 (11355344521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630571 + ... + 648328.

It is an arithmetic number, because the mean of its divisors is an integer number (1530843300).

Almost surely, 2^11355344221 is an apocalyptic number.

It is an amenable number.

11355344221 is a deficient number, since it is larger than the sum of its proper divisors (891402179).

11355344221 is a wasteful number, since it uses less digits than its factorization.

11355344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279595.

The product of its digits is 14400, while the sum is 31.

Adding to 11355344221 its reverse (12244355311), we get a palindrome (23599699532).

The spelling of 11355344221 in words is "eleven billion, three hundred fifty-five million, three hundred forty-four thousand, two hundred twenty-one".