12255515222432 has 12 divisors (see below), whose sum is σ = 24128045594226. Its totient is φ = 6127757611200.

The previous prime is 12255515222407. The next prime is 12255515222497. The reversal of 12255515222432 is 23422251555221.

It can be written as a sum of positive squares in only one way, i.e., 9453386532496 + 2802128689936 = 3074636^2 + 1673956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12255515222432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191492425319 + ... + 191492425382.

Almost surely, 2^{12255515222432} is an apocalyptic number.

It is an amenable number.

12255515222432 is a deficient number, since it is larger than the sum of its proper divisors (11872530371794).

12255515222432 is an equidigital number, since it uses as much as digits as its factorization.

12255515222432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382984850711 (or 382984850703 counting only the distinct ones).

The product of its digits is 480000, while the sum is 41.

Adding to 12255515222432 its reverse (23422251555221), we get a palindrome (35677766777653).

The spelling of 12255515222432 in words is "twelve trillion, two hundred fifty-five billion, five hundred fifteen million, two hundred twenty-two thousand, four hundred thirty-two".