11221155011 has 8 divisors (see below), whose sum is σ = 12242831664. Its totient is φ = 10199740320.

The previous prime is 11221154947. The next prime is 11221155019. The reversal of 11221155011 is 11055112211.

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

It is not a de Polignac number, because 11221155011 - 2⁶ = 11221154947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221155019) 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, 30161 + ... + 152813.

It is an arithmetic number, because the mean of its divisors is an integer number (1530353958).

Almost surely, 2^11221155011 is an apocalyptic number.

11221155011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11221155011 is a deficient number, since it is larger than the sum of its proper divisors (1021676653).

11221155011 is a wasteful number, since it uses less digits than its factorization.

11221155011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130981.

The product of its (nonzero) digits is 100, while the sum is 20.

Adding to 11221155011 its reverse (11055112211), we get a palindrome (22276267222).

The spelling of 11221155011 in words is "eleven billion, two hundred twenty-one million, one hundred fifty-five thousand, eleven".