11112111110221 has 8 divisors (see below), whose sum is σ = 12235595582304. Its totient is φ = 10007508730320.

The previous prime is 11112111110213. The next prime is 11112111110239. The reversal of 11112111110221 is 12201111121111.

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 11112111110221 - 2³ = 11112111110213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112111110195 and 11112111110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112111810221) 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, 4720521810 + ... + 4720524163.

It is an arithmetic number, because the mean of its divisors is an integer number (1529449447788).

Almost surely, 2^{11112111110221} is an apocalyptic number.

11112111110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11112111110221 is a deficient number, since it is larger than the sum of its proper divisors (1123484472083).

11112111110221 is a wasteful number, since it uses less digits than its factorization.

11112111110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441046091.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11112111110221 its reverse (12201111121111), we get a palindrome (23313222231332).

The spelling of 11112111110221 in words is "eleven trillion, one hundred twelve billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-one".