12012100305450 has 96 divisors (see below), whose sum is σ = 35837604579840. Its totient is φ = 2601116452800.

The previous prime is 12012100305397. The next prime is 12012100305481. The reversal of 12012100305450 is 5450300121021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012100305450.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 301035196 + ... + 301075095.

It is an arithmetic number, because the mean of its divisors is an integer number (373308381040).

Almost surely, 2^{12012100305450} is an apocalyptic number.

12012100305450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012100305450 is an abundant number, since it is smaller than the sum of its proper divisors (23825504274390).

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

12012100305450 is a wasteful number, since it uses less digits than its factorization.

12012100305450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602110332 (or 602110327 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12012100305450 its reverse (5450300121021), we get a palindrome (17462400426471).

The spelling of 12012100305450 in words is "twelve trillion, twelve billion, one hundred million, three hundred five thousand, four hundred fifty".