111221434 has 8 divisors (see below), whose sum is σ = 166883220. Its totient is φ = 55593696.

The previous prime is 111221419. The next prime is 111221437. The reversal of 111221434 is 434122111.

It can be written as a sum of positive squares in 2 ways, for example, as 101949409 + 9272025 = 10097^2 + 3045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111221437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512 + ... + 15124.

Almost surely, 2^111221434 is an apocalyptic number.

111221434 is a deficient number, since it is larger than the sum of its proper divisors (55661786).

111221434 is a wasteful number, since it uses less digits than its factorization.

111221434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17024.

The product of its digits is 192, while the sum is 19.

The square root of 111221434 is about 10546.1573096555. The cubic root of 111221434 is about 480.9089172758.

Adding to 111221434 its reverse (434122111), we get a palindrome (545343545).

The spelling of 111221434 in words is "one hundred eleven million, two hundred twenty-one thousand, four hundred thirty-four".