2112156015217 has 8 divisors (see below), whose sum is σ = 2184004392192. Its totient is φ = 2040539782800.

The previous prime is 2112156015209. The next prime is 2112156015253. The reversal of 2112156015217 is 7125106512112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112156015217 - 2³ = 2112156015209 is a prime.

It is a super-2 number, since 2×2112156015217² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112156015817) 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, 58017634 + ... + 58054027.

It is an arithmetic number, because the mean of its divisors is an integer number (273000549024).

Almost surely, 2^{2112156015217} is an apocalyptic number.

It is an amenable number.

2112156015217 is a deficient number, since it is larger than the sum of its proper divisors (71848376975).

2112156015217 is a wasteful number, since it uses less digits than its factorization.

2112156015217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116072279.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 2112156015217 in words is "two trillion, one hundred twelve billion, one hundred fifty-six million, fifteen thousand, two hundred seventeen".