111222120010111 has 32 divisors (see below), whose sum is σ = 122943893046336. Its totient is φ = 99776033280000.

The previous prime is 111222120010109. The next prime is 111222120010147. The reversal of 111222120010111 is 111010021222111.

It is not a de Polignac number, because 111222120010111 - 2¹ = 111222120010109 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 (111222120013111) 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, 404369845 + ... + 404644801.

It is an arithmetic number, because the mean of its divisors is an integer number (3841996657698).

Almost surely, 2^{111222120010111} is an apocalyptic number.

111222120010111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111222120010111 is a deficient number, since it is larger than the sum of its proper divisors (11721773036225).

111222120010111 is a wasteful number, since it uses less digits than its factorization.

111222120010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276283.

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

Adding to 111222120010111 its reverse (111010021222111), we get a palindrome (222232141232222).

The spelling of 111222120010111 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, ten thousand, one hundred eleven".