111011112020221 has 8 divisors (see below), whose sum is σ = 126891570364160. Its totient is φ = 95136085690128.

The previous prime is 111011112020197. The next prime is 111011112020239. The reversal of 111011112020221 is 122020211110111.

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

It is not a de Polignac number, because 111011112020221 - 2¹⁷ = 111011111889149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111011112020195 and 111011112020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011112050221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357959666 + ... + 1358041411.

It is an arithmetic number, because the mean of its divisors is an integer number (15861446295520).

Almost surely, 2^{111011112020221} is an apocalyptic number.

It is an amenable number.

111011112020221 is a deficient number, since it is larger than the sum of its proper divisors (15880458343939).

111011112020221 is an equidigital number, since it uses as much as digits as its factorization.

111011112020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716006923.

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

Adding to 111011112020221 its reverse (122020211110111), we get a palindrome (233031323130332).

The spelling of 111011112020221 in words is "one hundred eleven trillion, eleven billion, one hundred twelve million, twenty thousand, two hundred twenty-one".