1224340521 has 8 divisors (see below), whose sum is σ = 1632918144. Its totient is φ = 815994960.

The previous prime is 1224340517. The next prime is 1224340529. The reversal of 1224340521 is 1250434221.

1224340521 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224340521 - 2² = 1224340517 is a prime.

It is a super-2 number, since 2×1224340521² = 2998019422725102882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1224340491 and 1224340500.

It is not an unprimeable number, because it can be changed into a prime (1224340529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45306 + ... + 67091.

It is an arithmetic number, because the mean of its divisors is an integer number (204114768).

Almost surely, 2^1224340521 is an apocalyptic number.

It is an amenable number.

1224340521 is a deficient number, since it is larger than the sum of its proper divisors (408577623).

1224340521 is a wasteful number, since it uses less digits than its factorization.

1224340521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116031.

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

The square root of 1224340521 is about 34990.5776031205. The cubic root of 1224340521 is about 1069.7954367725.

Adding to 1224340521 its reverse (1250434221), we get a palindrome (2474774742).

The spelling of 1224340521 in words is "one billion, two hundred twenty-four million, three hundred forty thousand, five hundred twenty-one".