1217515270130 has 16 divisors (see below), whose sum is σ = 2191541863320. Its totient is φ = 487002913152.

The previous prime is 1217515270091. The next prime is 1217515270141. The reversal of 1217515270130 is 310725157121.

It can be written as a sum of positive squares in 4 ways, for example, as 1200170643529 + 17344626601 = 1095523^2 + 131699^2 .

It is an unprimeable number.

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, 1754156 + ... + 2347784.

Almost surely, 2^{1217515270130} is an apocalyptic number.

1217515270130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217515270130 is a deficient number, since it is larger than the sum of its proper divisors (974026593190).

1217515270130 is a wasteful number, since it uses less digits than its factorization.

1217515270130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798733.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 1217515270130 in words is "one trillion, two hundred seventeen billion, five hundred fifteen million, two hundred seventy thousand, one hundred thirty".