11110101221 has 8 divisors (see below), whose sum is σ = 11382358944. Its totient is φ = 10838474640.

The previous prime is 11110101193. The next prime is 11110101257. The reversal of 11110101221 is 12210101111.

11110101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11110101221 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 (11110101271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122051 + ... + 192656.

It is an arithmetic number, because the mean of its divisors is an integer number (1422794868).

Almost surely, 2^11110101221 is an apocalyptic number.

It is an amenable number.

11110101221 is a deficient number, since it is larger than the sum of its proper divisors (272257723).

11110101221 is an equidigital number, since it uses as much as digits as its factorization.

11110101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315571.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11110101221 its reverse (12210101111), we get a palindrome (23320202332).

The spelling of 11110101221 in words is "eleven billion, one hundred ten million, one hundred one thousand, two hundred twenty-one".