122000005 has 4 divisors (see below), whose sum is σ = 146400012. Its totient is φ = 97600000.

The previous prime is 122000003. The next prime is 122000029. The reversal of 122000005 is 500000221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500000221 = 7 ⋅71428603.

It can be written as a sum of positive squares in 2 ways, for example, as 21659716 + 100340289 = 4654^2 + 10017^2 .

It is not a de Polignac number, because 122000005 - 2¹ = 122000003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121999955 and 122000000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122000003) 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, 12199996 + ... + 12200005.

It is an arithmetic number, because the mean of its divisors is an integer number (36600003).

Almost surely, 2^122000005 is an apocalyptic number.

It is an amenable number.

122000005 is a deficient number, since it is larger than the sum of its proper divisors (24400007).

122000005 is an equidigital number, since it uses as much as digits as its factorization.

122000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24400006.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 122000005 is about 11045.3612435266. The cubic root of 122000005 is about 495.9675731597.

Adding to 122000005 its reverse (500000221), we get a palindrome (622000226).

The spelling of 122000005 in words is "one hundred twenty-two million, five", and thus it is an aban number.