1217580517122 has 16 divisors (see below), whose sum is σ = 2437202256480. Its totient is φ = 405519968672.

The previous prime is 1217580517121. The next prime is 1217580517129. The reversal of 1217580517122 is 2217150857121.

It is not an unprimeable number, because it can be changed into a prime (1217580517121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85043172 + ... + 85057487.

It is an arithmetic number, because the mean of its divisors is an integer number (152325141030).

Almost surely, 2^{1217580517122} is an apocalyptic number.

1217580517122 is an abundant number, since it is smaller than the sum of its proper divisors (1219621739358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217580517122 is a wasteful number, since it uses less digits than its factorization.

1217580517122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170101857.

The product of its (nonzero) digits is 78400, while the sum is 42.

The spelling of 1217580517122 in words is "one trillion, two hundred seventeen billion, five hundred eighty million, five hundred seventeen thousand, one hundred twenty-two".