111021222010111 has 16 divisors (see below), whose sum is σ = 128672728174080. Its totient is φ = 93817637696160.

The previous prime is 111021222010079. The next prime is 111021222010147. The reversal of 111021222010111 is 111010222120111.

It is not a de Polignac number, because 111021222010111 - 2⁵ = 111021222010079 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 (111021222050111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11347545 + ... + 18729901.

It is an arithmetic number, because the mean of its divisors is an integer number (8042045510880).

Almost surely, 2^{111021222010111} is an apocalyptic number.

111021222010111 is a deficient number, since it is larger than the sum of its proper divisors (17651506163969).

111021222010111 is an equidigital number, since it uses as much as digits as its factorization.

111021222010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7412694.

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

Adding to 111021222010111 its reverse (111010222120111), we get a palindrome (222031444130222).

The spelling of 111021222010111 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty-two million, ten thousand, one hundred eleven".