111221222101120 has 32 divisors (see below), whose sum is σ = 265888234087020. Its totient is φ = 44488488840192.

The previous prime is 111221222101111. The next prime is 111221222101127. The reversal of 111221222101120 is 21101222122111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111154174249024 + 67047852096 = 10542968^2 + 258936^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (111221222101127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86891579127 + ... + 86891580406.

Almost surely, 2^{111221222101120} is an apocalyptic number.

111221222101120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221222101120 is an abundant number, since it is smaller than the sum of its proper divisors (154667011985900).

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

111221222101120 is an equidigital number, since it uses as much as digits as its factorization.

111221222101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173783159552 (or 173783159540 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111221222101120 its reverse (21101222122111), we get a palindrome (132322444223231).

The spelling of 111221222101120 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty".