1217245312426 has 16 divisors (see below), whose sum is σ = 2145075655968. Its totient is φ = 510732298800.

The previous prime is 1217245312391. The next prime is 1217245312427. The reversal of 1217245312426 is 6242135427121.

It is not an unprimeable number, because it can be changed into a prime (1217245312427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2128050960 + ... + 2128051531.

It is an arithmetic number, because the mean of its divisors is an integer number (134067228498).

Almost surely, 2^{1217245312426} is an apocalyptic number.

1217245312426 is a deficient number, since it is larger than the sum of its proper divisors (927830343542).

1217245312426 is a wasteful number, since it uses less digits than its factorization.

1217245312426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256102517.

The product of its digits is 161280, while the sum is 40.

The spelling of 1217245312426 in words is "one trillion, two hundred seventeen billion, two hundred forty-five million, three hundred twelve thousand, four hundred twenty-six".