12215005544255 has 48 divisors (see below), whose sum is σ = 15679323601920. Its totient is φ = 9132675424704.

The previous prime is 12215005544243. The next prime is 12215005544279. The reversal of 12215005544255 is 55244550051221.

It is not a de Polignac number, because 12215005544255 - 2⁶ = 12215005544191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169224182 + ... + 169296348.

It is an arithmetic number, because the mean of its divisors is an integer number (326652575040).

Almost surely, 2^{12215005544255} is an apocalyptic number.

12215005544255 is a deficient number, since it is larger than the sum of its proper divisors (3464318057665).

12215005544255 is a wasteful number, since it uses less digits than its factorization.

12215005544255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73476 (or 73457 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 41.

Adding to 12215005544255 its reverse (55244550051221), we get a palindrome (67459555595476).

The spelling of 12215005544255 in words is "twelve trillion, two hundred fifteen billion, five million, five hundred forty-four thousand, two hundred fifty-five".