111203323321272 has 256 divisors, whose sum is σ = 342634230005760. Its totient is φ = 29288079097344.

The previous prime is 111203323321271. The next prime is 111203323321283. The reversal of 111203323321272 is 272123323302111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203323321271) 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 63 ways as a sum of consecutive naturals, for example, 4946095743 + ... + 4946118225.

It is an arithmetic number, because the mean of its divisors is an integer number (1338414960960).

Almost surely, 2^{111203323321272} is an apocalyptic number.

111203323321272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111203323321272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171317115002880).

111203323321272 is an abundant number, since it is smaller than the sum of its proper divisors (231430906684488).

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

111203323321272 is a wasteful number, since it uses less digits than its factorization.

111203323321272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25522 (or 25518 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

Adding to 111203323321272 its reverse (272123323302111), we get a palindrome (383326646623383).

The spelling of 111203323321272 in words is "one hundred eleven trillion, two hundred three billion, three hundred twenty-three million, three hundred twenty-one thousand, two hundred seventy-two".