1230215121305 has 32 divisors (see below), whose sum is σ = 1532754897408. Its totient is φ = 947212128000.

The previous prime is 1230215121299. The next prime is 1230215121313. The reversal of 1230215121305 is 5031215120321.

It is not a de Polignac number, because 1230215121305 - 2²⁶ = 1230148012441 is a prime.

It is a Duffinian number.

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 in 31 ways as a sum of consecutive naturals, for example, 81458255 + ... + 81473355.

It is an arithmetic number, because the mean of its divisors is an integer number (47898590544).

Almost surely, 2^{1230215121305} is an apocalyptic number.

It is an amenable number.

1230215121305 is a deficient number, since it is larger than the sum of its proper divisors (302539776103).

1230215121305 is a wasteful number, since it uses less digits than its factorization.

1230215121305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20897.

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

The spelling of 1230215121305 in words is "one trillion, two hundred thirty billion, two hundred fifteen million, one hundred twenty-one thousand, three hundred five".