2012110215517 has 4 divisors (see below), whose sum is σ = 2050074559260. Its totient is φ = 1974145871776.

The previous prime is 2012110215487. The next prime is 2012110215551. The reversal of 2012110215517 is 7155120112102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1157763088036 + 854347127481 = 1075994^2 + 924309^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012110215517 - 2²⁷ = 2011975997789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012110245517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18982171792 + ... + 18982171897.

It is an arithmetic number, because the mean of its divisors is an integer number (512518639815).

Almost surely, 2^{2012110215517} is an apocalyptic number.

It is an amenable number.

2012110215517 is a deficient number, since it is larger than the sum of its proper divisors (37964343743).

2012110215517 is an equidigital number, since it uses as much as digits as its factorization.

2012110215517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37964343742.

The product of its (nonzero) digits is 1400, while the sum is 28.

Adding to 2012110215517 its reverse (7155120112102), we get a palindrome (9167230327619).

The spelling of 2012110215517 in words is "two trillion, twelve billion, one hundred ten million, two hundred fifteen thousand, five hundred seventeen".