111221123311320 has 64 divisors (see below), whose sum is σ = 363996403568640. Its totient is φ = 26962696560000.

The previous prime is 111221123311237. The next prime is 111221123311339. The reversal of 111221123311320 is 23113321122111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 42129212056 + ... + 42129214695.

It is an arithmetic number, because the mean of its divisors is an integer number (5687443805760).

Almost surely, 2^{111221123311320} is an apocalyptic number.

111221123311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221123311320 is an abundant number, since it is smaller than the sum of its proper divisors (252775280257320).

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

111221123311320 is a wasteful number, since it uses less digits than its factorization.

111221123311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84258426776 (or 84258426772 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 111221123311320 its reverse (23113321122111), we get a palindrome (134334444433431).

The spelling of 111221123311320 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-three million, three hundred eleven thousand, three hundred twenty".