2115210120017 has 16 divisors (see below), whose sum is σ = 2138144736000. Its totient is φ = 2092404726720.

The previous prime is 2115210120011. The next prime is 2115210120031. The reversal of 2115210120017 is 7100210125112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2115210120017 - 2²⁰ = 2115209071441 is a prime.

It is a super-2 number, since 2×2115210120017² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2115210119974 and 2115210120001.

It is not an unprimeable number, because it can be changed into a prime (2115210120011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250940159 + ... + 250948587.

It is an arithmetic number, because the mean of its divisors is an integer number (133634046000).

Almost surely, 2^{2115210120017} is an apocalyptic number.

It is an amenable number.

2115210120017 is a deficient number, since it is larger than the sum of its proper divisors (22934615983).

2115210120017 is a wasteful number, since it uses less digits than its factorization.

2115210120017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15776.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 2115210120017 its reverse (7100210125112), we get a palindrome (9215420245129).

The spelling of 2115210120017 in words is "two trillion, one hundred fifteen billion, two hundred ten million, one hundred twenty thousand, seventeen".