2112163705 has 8 divisors (see below), whose sum is σ = 2541861000. Its totient is φ = 1684887936.

The previous prime is 2112163693. The next prime is 2112163717. The reversal of 2112163705 is 5073612112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2112163693) and next prime (2112163717).

It can be written as a sum of positive squares in 4 ways, for example, as 187060329 + 1925103376 = 13677^2 + 43876^2 .

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 2112163705 - 2¹⁷ = 2112032633 is a prime.

It is a super-2 number, since 2×2112163705² = 8922471033438654050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603460 + ... + 606949.

It is an arithmetic number, because the mean of its divisors is an integer number (317732625).

Almost surely, 2^2112163705 is an apocalyptic number.

It is an amenable number.

2112163705 is a deficient number, since it is larger than the sum of its proper divisors (429697295).

2112163705 is a wasteful number, since it uses less digits than its factorization.

2112163705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210763.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2112163705 is about 45958.2822242085. The cubic root of 2112163705 is about 1283.0468807257.

Adding to 2112163705 its reverse (5073612112), we get a palindrome (7185775817).

The spelling of 2112163705 in words is "two billion, one hundred twelve million, one hundred sixty-three thousand, seven hundred five".