111912411 has 64 divisors (see below), whose sum is σ = 182891520. Its totient is φ = 60149760.

The previous prime is 111912407. The next prime is 111912433. The reversal of 111912411 is 114219111.

It is not a de Polignac number, because 111912411 - 2² = 111912407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111912461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 625120 + ... + 625298.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^111912411 is an apocalyptic number.

111912411 is a deficient number, since it is larger than the sum of its proper divisors (70979109).

111912411 is a wasteful number, since it uses less digits than its factorization.

111912411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its digits is 72, while the sum is 21.

The square root of 111912411 is about 10578.8662436010. The cubic root of 111912411 is about 481.9027641415.

It can be divided in two parts, 1119 and 12411, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 111912411 in words is "one hundred eleven million, nine hundred twelve thousand, four hundred eleven".