1224200523 has 16 divisors (see below), whose sum is σ = 2008944896. Its totient is φ = 645732000.

The previous prime is 1224200513. The next prime is 1224200561. The reversal of 1224200523 is 3250024221.

It is not a de Polignac number, because 1224200523 - 2¹⁰ = 1224199499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1224200523.

It is not an unprimeable number, because it can be changed into a prime (1224200503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2241853 + ... + 2242398.

It is an arithmetic number, because the mean of its divisors is an integer number (125559056).

Almost surely, 2^1224200523 is an apocalyptic number.

1224200523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1224200523 is a deficient number, since it is larger than the sum of its proper divisors (784744373).

1224200523 is a wasteful number, since it uses less digits than its factorization.

1224200523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484274.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1224200523 is about 34988.5770359413. The cubic root of 1224200523 is about 1069.7546597371.

Adding to 1224200523 its reverse (3250024221), we get a palindrome (4474224744).

The spelling of 1224200523 in words is "one billion, two hundred twenty-four million, two hundred thousand, five hundred twenty-three".