111012321 has 16 divisors (see below), whose sum is σ = 173734784. Its totient is φ = 61720704.

The previous prime is 111012313. The next prime is 111012323. The reversal of 111012321 is 123210111.

It is not a de Polignac number, because 111012321 - 2³ = 111012313 is a prime.

It is a Duffinian number.

111012321 is a modest number, since divided by 12321 gives 111 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 111012297 and 111012306.

It is not an unprimeable number, because it can be changed into a prime (111012323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70660 + ... + 72213.

It is an arithmetic number, because the mean of its divisors is an integer number (10858424).

Almost surely, 2^111012321 is an apocalyptic number.

It is an amenable number.

111012321 is a deficient number, since it is larger than the sum of its proper divisors (62722463).

111012321 is a wasteful number, since it uses less digits than its factorization.

111012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142920.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111012321 is about 10536.2384654107. The cubic root of 111012321 is about 480.6073345261.

Adding to 111012321 its reverse (123210111), we get a palindrome (234222432).

It can be divided in two parts, 1110 and 12321, that added together give a palindrome (13431).

The spelling of 111012321 in words is "one hundred eleven million, twelve thousand, three hundred twenty-one".