111121233321 has 8 divisors (see below), whose sum is σ = 169327593664. Its totient is φ = 63497847600.

The previous prime is 111121233283. The next prime is 111121233371. The reversal of 111121233321 is 123332121111.

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

It is not a de Polignac number, because 111121233321 - 2⁹ = 111121232809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5291487301 = 111121233321 / (1 + 1 + 1 + 1 + 2 + 1 + 2 + 3 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111121233371) 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, 2645743630 + ... + 2645743671.

It is an arithmetic number, because the mean of its divisors is an integer number (21165949208).

Almost surely, 2^111121233321 is an apocalyptic number.

It is an amenable number.

111121233321 is a deficient number, since it is larger than the sum of its proper divisors (58206360343).

111121233321 is an equidigital number, since it uses as much as digits as its factorization.

111121233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291487311.

The product of its digits is 216, while the sum is 21.

Adding to 111121233321 its reverse (123332121111), we get a palindrome (234453354432).

The spelling of 111121233321 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thirty-three thousand, three hundred twenty-one".