111101002002221 has 32 divisors (see below), whose sum is σ = 140432434864128. Its totient is φ = 85374475079040.

The previous prime is 111101002002173. The next prime is 111101002002233. The reversal of 111101002002221 is 122200200101111.

It is a de Polignac number, because none of the positive numbers 2^k-111101002002221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111101002002196 and 111101002002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101002004221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39371696 + ... + 42099078.

It is an arithmetic number, because the mean of its divisors is an integer number (4388513589504).

Almost surely, 2^{111101002002221} is an apocalyptic number.

111101002002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111101002002221 is a deficient number, since it is larger than the sum of its proper divisors (29331432861907).

111101002002221 is a wasteful number, since it uses less digits than its factorization.

111101002002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734721.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111101002002221 its reverse (122200200101111), we get a palindrome (233301202103332).

The spelling of 111101002002221 in words is "one hundred eleven trillion, one hundred one billion, two million, two thousand, two hundred twenty-one".