121111323 has 16 divisors (see below), whose sum is σ = 166175520. Its totient is φ = 78460128.

The previous prime is 121111297. The next prime is 121111343. The reversal of 121111323 is 323111121.

It is a happy number.

It is not a de Polignac number, because 121111323 - 2⁶ = 121111259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121111343) 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, 151561 + ... + 152357.

It is an arithmetic number, because the mean of its divisors is an integer number (10385970).

Almost surely, 2^121111323 is an apocalyptic number.

121111323 is a deficient number, since it is larger than the sum of its proper divisors (45064197).

121111323 is an frugal number, since it uses more digits than its factorization.

121111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 837 counting only the distinct ones).

The product of its digits is 36, while the sum is 15.

The square root of 121111323 is about 11005.0589730360. The cubic root of 121111323 is about 494.7603819335.

Adding to 121111323 its reverse (323111121), we get a palindrome (444222444).

The spelling of 121111323 in words is "one hundred twenty-one million, one hundred eleven thousand, three hundred twenty-three".