12215310056 has 8 divisors (see below), whose sum is σ = 22903706370. Its totient is φ = 6107655024.

The previous prime is 12215310053. The next prime is 12215310059. The reversal of 12215310056 is 65001351221.

12215310056 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 (12215310053) and next prime (12215310059).

It can be written as a sum of positive squares in only one way, i.e., 10472247556 + 1743062500 = 102334^2 + 41750^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12215310053) 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 as a sum of consecutive naturals, namely, 763456871 + ... + 763456886.

Almost surely, 2^12215310056 is an apocalyptic number.

It is an amenable number.

12215310056 is a deficient number, since it is larger than the sum of its proper divisors (10688396314).

12215310056 is a wasteful number, since it uses less digits than its factorization.

12215310056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526913763 (or 1526913759 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 12215310056 its reverse (65001351221), we get a palindrome (77216661277).

The spelling of 12215310056 in words is "twelve billion, two hundred fifteen million, three hundred ten thousand, fifty-six".