111222222200111 has 4 divisors (see below), whose sum is σ = 121333333309224. Its totient is φ = 101111111091000.

The previous prime is 111222222200081. The next prime is 111222222200123. The reversal of 111222222200111 is 111002222222111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111222222200111 - 2¹⁴ = 111222222183727 is a prime.

It is a super-2 number, since 2×111222222200111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222222200311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5055555554540 + ... + 5055555554561.

It is an arithmetic number, because the mean of its divisors is an integer number (30333333327306).

Almost surely, 2^{111222222200111} is an apocalyptic number.

111222222200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111222222200111 is a deficient number, since it is larger than the sum of its proper divisors (10111111109113).

111222222200111 is a wasteful number, since it uses less digits than its factorization.

111222222200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111111109112.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111222222200111 its reverse (111002222222111), we get a palindrome (222224444422222).

The spelling of 111222222200111 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred thousand, one hundred eleven".