111121023434 has 16 divisors (see below), whose sum is σ = 166921057800. Its totient is φ = 55480710144.

The previous prime is 111121023373. The next prime is 111121023449. The reversal of 111121023434 is 434320121111.

It can be written as a sum of positive squares in 4 ways, for example, as 93841132225 + 17279891209 = 306335^2 + 131453^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7726202 + ... + 7740570.

Almost surely, 2^111121023434 is an apocalyptic number.

111121023434 is a deficient number, since it is larger than the sum of its proper divisors (55800034366).

111121023434 is a wasteful number, since it uses less digits than its factorization.

111121023434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19657.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 111121023434 its reverse (434320121111), we get a palindrome (545441144545).

The spelling of 111121023434 in words is "one hundred eleven billion, one hundred twenty-one million, twenty-three thousand, four hundred thirty-four".