122166005 has 8 divisors (see below), whose sum is σ = 157876152. Its totient is φ = 90214848.

The previous prime is 122165983. The next prime is 122166043. The reversal of 122166005 is 500661221.

It can be written as a sum of positive squares in 4 ways, for example, as 6345361 + 115820644 = 2519^2 + 10762^2 .

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 122166005 - 2⁶ = 122165941 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 939674 + ... + 939803.

It is an arithmetic number, because the mean of its divisors is an integer number (19734519).

Almost surely, 2^122166005 is an apocalyptic number.

It is an amenable number.

122166005 is a deficient number, since it is larger than the sum of its proper divisors (35710147).

122166005 is a wasteful number, since it uses less digits than its factorization.

122166005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879495.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 122166005 is about 11052.8731558812. The cubic root of 122166005 is about 496.1924182438.

The spelling of 122166005 in words is "one hundred twenty-two million, one hundred sixty-six thousand, five".