12111221101230 has 32 divisors (see below), whose sum is σ = 32296589604000. Its totient is φ = 3229658960256.

The previous prime is 12111221101207. The next prime is 12111221101249. The reversal of 12111221101230 is 3210112211121.

It is a happy number.

12111221101230 is a `hidden beast` number, since 1 + 2 + 111 + 221 + 101 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22428186955 + ... + 22428187494.

It is an arithmetic number, because the mean of its divisors is an integer number (1009268425125).

Almost surely, 2^{12111221101230} is an apocalyptic number.

12111221101230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111221101230 is an abundant number, since it is smaller than the sum of its proper divisors (20185368502770).

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

12111221101230 is a wasteful number, since it uses less digits than its factorization.

12111221101230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44856374465 (or 44856374459 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12111221101230 its reverse (3210112211121), we get a palindrome (15321333312351).

The spelling of 12111221101230 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, two hundred thirty".