12228405537 has 8 divisors (see below), whose sum is σ = 16318686304. Its totient is φ = 8145197568.

The previous prime is 12228405523. The next prime is 12228405551. The reversal of 12228405537 is 73550482221.

12228405537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12228405523) and next prime (12228405551).

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

It is not a de Polignac number, because 12228405537 - 2¹⁶ = 12228340001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12228405495 and 12228405504.

It is not an unprimeable number, because it can be changed into a prime (12228405557) 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 7 ways as a sum of consecutive naturals, for example, 1764163 + ... + 1771080.

It is an arithmetic number, because the mean of its divisors is an integer number (2039835788).

Almost surely, 2^12228405537 is an apocalyptic number.

It is an amenable number.

12228405537 is a deficient number, since it is larger than the sum of its proper divisors (4090280767).

12228405537 is a wasteful number, since it uses less digits than its factorization.

12228405537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536399.

The product of its (nonzero) digits is 134400, while the sum is 39.

Adding to 12228405537 its reverse (73550482221), we get a palindrome (85778887758).

The spelling of 12228405537 in words is "twelve billion, two hundred twenty-eight million, four hundred five thousand, five hundred thirty-seven".