111221241320 has 64 divisors (see below), whose sum is σ = 302820871680. Its totient is φ = 35889878016.

The previous prime is 111221241301. The next prime is 111221241361. The reversal of 111221241320 is 23142122111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111221241292 and 111221241301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11678144 + ... + 11687663.

It is an arithmetic number, because the mean of its divisors is an integer number (4731576120).

Almost surely, 2^111221241320 is an apocalyptic number.

111221241320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221241320 is an abundant number, since it is smaller than the sum of its proper divisors (191599630360).

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

111221241320 is a wasteful number, since it uses less digits than its factorization.

111221241320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23365842 (or 23365838 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 111221241320 its reverse (23142122111), we get a palindrome (134363363431).

The spelling of 111221241320 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred forty-one thousand, three hundred twenty".