11215226105221 has 8 divisors (see below), whose sum is σ = 11393506555200. Its totient is φ = 11037973208832.

The previous prime is 11215226105201. The next prime is 11215226105233. The reversal of 11215226105221 is 12250162251211.

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 11215226105221 - 2¹¹ = 11215226103173 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 (11215226105201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256866396 + ... + 256910053.

It is an arithmetic number, because the mean of its divisors is an integer number (1424188319400).

Almost surely, 2^{11215226105221} is an apocalyptic number.

It is an amenable number.

11215226105221 is a deficient number, since it is larger than the sum of its proper divisors (178280449979).

11215226105221 is an equidigital number, since it uses as much as digits as its factorization.

11215226105221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513776795.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 11215226105221 its reverse (12250162251211), we get a palindrome (23465388356432).

The spelling of 11215226105221 in words is "eleven trillion, two hundred fifteen billion, two hundred twenty-six million, one hundred five thousand, two hundred twenty-one".