1215412053205 has 32 divisors (see below), whose sum is σ = 1683537032448. Its totient is φ = 825084096000.

The previous prime is 1215412053197. The next prime is 1215412053211. The reversal of 1215412053205 is 5023502145121.

It is not a de Polignac number, because 1215412053205 - 2³ = 1215412053197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58504470 + ... + 58525240.

It is an arithmetic number, because the mean of its divisors is an integer number (52610532264).

Almost surely, 2^{1215412053205} is an apocalyptic number.

It is an amenable number.

1215412053205 is a deficient number, since it is larger than the sum of its proper divisors (468124979243).

1215412053205 is a wasteful number, since it uses less digits than its factorization.

1215412053205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37437.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1215412053205 its reverse (5023502145121), we get a palindrome (6238914198326).

The spelling of 1215412053205 in words is "one trillion, two hundred fifteen billion, four hundred twelve million, fifty-three thousand, two hundred five".