111331330121220 has 192 divisors, whose sum is σ = 340438447964160. Its totient is φ = 26959918003200.

The previous prime is 111331330121189. The next prime is 111331330121257. The reversal of 111331330121220 is 22121033133111.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2467481821 + ... + 2467526939.

It is an arithmetic number, because the mean of its divisors is an integer number (1773116916480).

Almost surely, 2^{111331330121220} is an apocalyptic number.

111331330121220 is a gapful number since it is divisible by the number (10) 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 111331330121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170219223982080).

111331330121220 is an abundant number, since it is smaller than the sum of its proper divisors (229107117842940).

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

111331330121220 is a wasteful number, since it uses less digits than its factorization.

111331330121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49146 (or 49144 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 111331330121220 its reverse (22121033133111), we get a palindrome (133452363254331).

The spelling of 111331330121220 in words is "one hundred eleven trillion, three hundred thirty-one billion, three hundred thirty million, one hundred twenty-one thousand, two hundred twenty".