111224121 has 8 divisors (see below), whose sum is σ = 148704384. Its totient is φ = 73946640.

The previous prime is 111224107. The next prime is 111224123. The reversal of 111224121 is 121422111.

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

It is not a de Polignac number, because 111224121 - 2⁵ = 111224089 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111224121.

It is not an unprimeable number, because it can be changed into a prime (111224123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49410 + ... + 51611.

It is an arithmetic number, because the mean of its divisors is an integer number (18588048).

Almost surely, 2^111224121 is an apocalyptic number.

It is an amenable number.

111224121 is a deficient number, since it is larger than the sum of its proper divisors (37480263).

111224121 is a wasteful number, since it uses less digits than its factorization.

111224121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101391.

The product of its digits is 32, while the sum is 15.

The square root of 111224121 is about 10546.2847012585. The cubic root of 111224121 is about 480.9127900061.

Adding to 111224121 its reverse (121422111), we get a palindrome (232646232).

The spelling of 111224121 in words is "one hundred eleven million, two hundred twenty-four thousand, one hundred twenty-one".