121400305224 has 64 divisors (see below), whose sum is σ = 331287840000. Its totient is φ = 36766182720.

The previous prime is 121400305223. The next prime is 121400305237. The reversal of 121400305224 is 422503004121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 121400305194 and 121400305203.

It is not an unprimeable number, because it can be changed into a prime (121400305223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313207 + ... + 583865.

It is an arithmetic number, because the mean of its divisors is an integer number (5176372500).

Almost surely, 2^121400305224 is an apocalyptic number.

It is an amenable number.

121400305224 is an abundant number, since it is smaller than the sum of its proper divisors (209887534776).

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

121400305224 is a wasteful number, since it uses less digits than its factorization.

121400305224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272378 (or 272374 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 121400305224 its reverse (422503004121), we get a palindrome (543903309345).

It can be divided in two parts, 121400 and 305224, that added together give a palindrome (426624).

The spelling of 121400305224 in words is "one hundred twenty-one billion, four hundred million, three hundred five thousand, two hundred twenty-four".