11135442221 has 8 divisors (see below), whose sum is σ = 11793553344. Its totient is φ = 10477673920.

The previous prime is 11135442193. The next prime is 11135442229. The reversal of 11135442221 is 12224453111.

It is a happy number.

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

It is not a de Polignac number, because 11135442221 - 2¹⁴ = 11135425837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11135442229) 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, 17255 + ... + 150228.

It is an arithmetic number, because the mean of its divisors is an integer number (1474194168).

Almost surely, 2^11135442221 is an apocalyptic number.

It is an amenable number.

11135442221 is a deficient number, since it is larger than the sum of its proper divisors (658111123).

11135442221 is a wasteful number, since it uses less digits than its factorization.

11135442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171411.

The product of its digits is 1920, while the sum is 26.

Adding to 11135442221 its reverse (12224453111), we get a palindrome (23359895332).

The spelling of 11135442221 in words is "eleven billion, one hundred thirty-five million, four hundred forty-two thousand, two hundred twenty-one".