2165213087215 has 16 divisors (see below), whose sum is σ = 2628095932800. Its totient is φ = 1712286560512.

The previous prime is 2165213087209. The next prime is 2165213087251. The reversal of 2165213087215 is 5127803125612.

It is a cyclic number.

It is not a de Polignac number, because 2165213087215 - 2²⁷ = 2165078869487 is a prime.

It is a super-2 number, since 2×2165213087215² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218729 + ... + 2411581.

It is an arithmetic number, because the mean of its divisors is an integer number (164255995800).

Almost surely, 2^{2165213087215} is an apocalyptic number.

2165213087215 is a deficient number, since it is larger than the sum of its proper divisors (462882845585).

2165213087215 is a wasteful number, since it uses less digits than its factorization.

2165213087215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197026.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 2165213087215 in words is "two trillion, one hundred sixty-five billion, two hundred thirteen million, eighty-seven thousand, two hundred fifteen".