11110101220221 has 16 divisors (see below), whose sum is σ = 14817797670144. Its totient is φ = 7404569708544.

The previous prime is 11110101220199. The next prime is 11110101220259. The reversal of 11110101220221 is 12202210101111.

It is a happy number.

It is not a de Polignac number, because 11110101220221 - 2⁷ = 11110101220093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11110101220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110101220271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332054325 + ... + 332087781.

It is an arithmetic number, because the mean of its divisors is an integer number (926112354384).

Almost surely, 2^{11110101220221} is an apocalyptic number.

It is an amenable number.

11110101220221 is a deficient number, since it is larger than the sum of its proper divisors (3707696449923).

11110101220221 is a wasteful number, since it uses less digits than its factorization.

11110101220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62500.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11110101220221 its reverse (12202210101111), we get a palindrome (23312311321332).

The spelling of 11110101220221 in words is "eleven trillion, one hundred ten billion, one hundred one million, two hundred twenty thousand, two hundred twenty-one".