111203021221320 has 96 divisors (see below), whose sum is σ = 388075849588800. Its totient is φ = 25417833420672.

The previous prime is 111203021221309. The next prime is 111203021221321. The reversal of 111203021221320 is 23122120302111.

111203021221320 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×111203021221320² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (111203021221321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9456033340 + ... + 9456045099.

It is an arithmetic number, because the mean of its divisors is an integer number (4042456766550).

Almost surely, 2^{111203021221320} is an apocalyptic number.

111203021221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111203021221320 is an abundant number, since it is smaller than the sum of its proper divisors (276872828367480).

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

111203021221320 is a wasteful number, since it uses less digits than its factorization.

111203021221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18912078467 (or 18912078456 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 111203021221320 its reverse (23122120302111), we get a palindrome (134325141523431).

The spelling of 111203021221320 in words is "one hundred eleven trillion, two hundred three billion, twenty-one million, two hundred twenty-one thousand, three hundred twenty".