240421221224 has 16 divisors (see below), whose sum is σ = 450999199620. Its totient is φ = 120154768000.

The previous prime is 240421221223. The next prime is 240421221239. The reversal of 240421221224 is 422122124042.

It can be written as a sum of positive squares in 2 ways, for example, as 203049372100 + 37371849124 = 450610^2 + 193318^2 .

It is a super-2 number, since 2×240421221224² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240421221193 and 240421221202.

It is not an unprimeable number, because it can be changed into a prime (240421221223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6962027 + ... + 6996474.

Almost surely, 2^240421221224 is an apocalyptic number.

It is an amenable number.

240421221224 is a deficient number, since it is larger than the sum of its proper divisors (210577978396).

240421221224 is a wasteful number, since it uses less digits than its factorization.

240421221224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960660 (or 13960656 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 240421221224 its reverse (422122124042), we get a palindrome (662543345266).

The spelling of 240421221224 in words is "two hundred forty billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-four".