121324444500 has 96 divisors (see below), whose sum is σ = 403767786240. Its totient is φ = 27731299200.

The previous prime is 121324444427. The next prime is 121324444511. The reversal of 121324444500 is 5444423121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5766855 + ... + 5787854.

It is an arithmetic number, because the mean of its divisors is an integer number (4205914440).

Almost surely, 2^121324444500 is an apocalyptic number.

121324444500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121324444500 is an abundant number, since it is smaller than the sum of its proper divisors (282443341740).

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

121324444500 is a wasteful number, since it uses less digits than its factorization.

121324444500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11554738 (or 11554726 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 121324444500 its reverse (5444423121), we get a palindrome (126768867621).

The spelling of 121324444500 in words is "one hundred twenty-one billion, three hundred twenty-four million, four hundred forty-four thousand, five hundred".