111222042111 has 28 divisors (see below), whose sum is σ = 166819457272. Its totient is φ = 74120159376.

The previous prime is 111222042047. The next prime is 111222042119. The reversal of 111222042111 is 111240222111.

111222042111 is a `hidden beast` number, since 1 + 1 + 12 + 220 + 421 + 11 = 666.

It is not a de Polignac number, because 111222042111 - 2⁶ = 111222042047 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 (111222042119) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2011740 + ... + 2066286.

Almost surely, 2^111222042111 is an apocalyptic number.

111222042111 is a deficient number, since it is larger than the sum of its proper divisors (55597415161).

111222042111 is an frugal number, since it uses more digits than its factorization.

111222042111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57362 (or 57347 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111222042111 its reverse (111240222111), we get a palindrome (222462264222).

The spelling of 111222042111 in words is "one hundred eleven billion, two hundred twenty-two million, forty-two thousand, one hundred eleven".