1213413215555 has 8 divisors (see below), whose sum is σ = 1456281608544. Its totient is φ = 970606739200.

The previous prime is 1213413215503. The next prime is 1213413215563. The reversal of 1213413215555 is 5555123143121.

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

It is not a de Polignac number, because 1213413215555 - 2¹² = 1213413211459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15436031 + ... + 15514440.

It is an arithmetic number, because the mean of its divisors is an integer number (182035201068).

Almost surely, 2^{1213413215555} is an apocalyptic number.

1213413215555 is a deficient number, since it is larger than the sum of its proper divisors (242868392989).

1213413215555 is an equidigital number, since it uses as much as digits as its factorization.

1213413215555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30958317.

The product of its digits is 90000, while the sum is 38.

Adding to 1213413215555 its reverse (5555123143121), we get a palindrome (6768536358676).

The spelling of 1213413215555 in words is "one trillion, two hundred thirteen billion, four hundred thirteen million, two hundred fifteen thousand, five hundred fifty-five".