111121323000 has 128 divisors (see below), whose sum is σ = 356069113920. Its totient is φ = 28831449600.

The previous prime is 111121322989. The next prime is 111121323007. The reversal of 111121323000 is 323121111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121323007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389547 + ... + 611546.

Almost surely, 2^111121323000 is an apocalyptic number.

111121323000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121323000 is an abundant number, since it is smaller than the sum of its proper divisors (244947790920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111121323000 is a wasteful number, since it uses less digits than its factorization.

111121323000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001154 (or 1001140 counting only the distinct ones).

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

Adding to 111121323000 its reverse (323121111), we get a palindrome (111444444111).

The spelling of 111121323000 in words is "one hundred eleven billion, one hundred twenty-one million, three hundred twenty-three thousand".