12235521121100 has 72 divisors (see below), whose sum is σ = 26678272950000. Its totient is φ = 4870794240000.

The previous prime is 12235521121079. The next prime is 12235521121123. The reversal of 12235521121100 is 112112553221.

It is a self number, because there is not a number n which added to its sum of digits gives 12235521121100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31154756 + ... + 31545044.

It is an arithmetic number, because the mean of its divisors is an integer number (370531568750).

Almost surely, 2^{12235521121100} is an apocalyptic number.

12235521121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12235521121100 is an abundant number, since it is smaller than the sum of its proper divisors (14442751828900).

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

12235521121100 is a wasteful number, since it uses less digits than its factorization.

12235521121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391803 (or 391796 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 12235521121100 its reverse (112112553221), we get a palindrome (12347633674321).

The spelling of 12235521121100 in words is "twelve trillion, two hundred thirty-five billion, five hundred twenty-one million, one hundred twenty-one thousand, one hundred".