1224122403 has 16 divisors (see below), whose sum is σ = 1866884096. Its totient is φ = 698915520.

The previous prime is 1224122371. The next prime is 1224122413. The reversal of 1224122403 is 3042214221.

It is not a de Polignac number, because 1224122403 - 2⁵ = 1224122371 is a prime.

It is a super-3 number, since 3×1224122403³ (a number of 28 digits) contains 333 as substring.

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 1224122403.

It is not an unprimeable number, because it can be changed into a prime (1224122413) 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, 2175 + ... + 49527.

It is an arithmetic number, because the mean of its divisors is an integer number (116680256).

Almost surely, 2^1224122403 is an apocalyptic number.

1224122403 is a deficient number, since it is larger than the sum of its proper divisors (642761693).

1224122403 is a wasteful number, since it uses less digits than its factorization.

1224122403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48594.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1224122403 is about 34987.4606537828. The cubic root of 1224122403 is about 1069.7319044749.

Adding to 1224122403 its reverse (3042214221), we get a palindrome (4266336624).

The spelling of 1224122403 in words is "one billion, two hundred twenty-four million, one hundred twenty-two thousand, four hundred three".