111110100000221 has 36 divisors (see below), whose sum is σ = 130166798518260. Its totient is φ = 94566794757120.

The previous prime is 111110100000187. The next prime is 111110100000281. The reversal of 111110100000221 is 122000001011111.

It can be written as a sum of positive squares in 6 ways, for example, as 4528324416196 + 106581775584025 = 2127986^2 + 10323845^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111110100000221 is a prime.

It is a super-2 number, since 2×111110100000221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110100000281) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3656245295 + ... + 3656275683.

It is an arithmetic number, because the mean of its divisors is an integer number (3615744403285).

Almost surely, 2^{111110100000221} is an apocalyptic number.

It is an amenable number.

111110100000221 is a deficient number, since it is larger than the sum of its proper divisors (19056698518039).

111110100000221 is an equidigital number, since it uses as much as digits as its factorization.

111110100000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34062 (or 33906 counting only the distinct ones).

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

Adding to 111110100000221 its reverse (122000001011111), we get a palindrome (233110101011332).

The spelling of 111110100000221 in words is "one hundred eleven trillion, one hundred ten billion, one hundred million, two hundred twenty-one", and thus it is an aban number.