2170122859 has 4 divisors (see below), whose sum is σ = 2170884240. Its totient is φ = 2169361480.

The previous prime is 2170122827. The next prime is 2170122883. The reversal of 2170122859 is 9582210712.

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

It is a cyclic number.

It is not a de Polignac number, because 2170122859 - 2⁵ = 2170122827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170122359) 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, 376399 + ... + 382120.

It is an arithmetic number, because the mean of its divisors is an integer number (542721060).

Almost surely, 2^2170122859 is an apocalyptic number.

2170122859 is a deficient number, since it is larger than the sum of its proper divisors (761381).

2170122859 is an equidigital number, since it uses as much as digits as its factorization.

2170122859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761380.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2170122859 is about 46584.5774801060. The cubic root of 2170122859 is about 1294.6770230564.

The spelling of 2170122859 in words is "two billion, one hundred seventy million, one hundred twenty-two thousand, eight hundred fifty-nine".