11221131441 has 8 divisors (see below), whose sum is σ = 16112393920. Its totient is φ = 6905311632.

The previous prime is 11221131421. The next prime is 11221131457. The reversal of 11221131441 is 14413112211.

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

It is a de Polignac number, because none of the positive numbers 2^k-11221131441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221131421) 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, 143860621 + ... + 143860698.

It is an arithmetic number, because the mean of its divisors is an integer number (2014049240).

Almost surely, 2^11221131441 is an apocalyptic number.

It is an amenable number.

11221131441 is a deficient number, since it is larger than the sum of its proper divisors (4891262479).

11221131441 is a wasteful number, since it uses less digits than its factorization.

11221131441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287721335.

The product of its digits is 192, while the sum is 21.

Adding to 11221131441 its reverse (14413112211), we get a palindrome (25634243652).

The spelling of 11221131441 in words is "eleven billion, two hundred twenty-one million, one hundred thirty-one thousand, four hundred forty-one".