121224024 has 24 divisors (see below), whose sum is σ = 328315260. Its totient is φ = 40407984.

The previous prime is 121224017. The next prime is 121224029. The reversal of 121224024 is 420422121.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 121223988 and 121224006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121224029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 841762 + ... + 841905.

Almost surely, 2^121224024 is an apocalyptic number.

It is an amenable number.

121224024 is an abundant number, since it is smaller than the sum of its proper divisors (207091236).

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

121224024 is a wasteful number, since it uses less digits than its factorization.

121224024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683679 (or 1683672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 121224024 is about 11010.1782001928. The cubic root of 121224024 is about 494.9138019480.

Adding to 121224024 its reverse (420422121), we get a palindrome (541646145).

The spelling of 121224024 in words is "one hundred twenty-one million, two hundred twenty-four thousand, twenty-four".