122012005 has 4 divisors (see below), whose sum is σ = 146414412. Its totient is φ = 97609600.

The previous prime is 122011999. The next prime is 122012021. The reversal of 122012005 is 500210221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500210221 = 7 ⋅71458603.

It can be written as a sum of positive squares in 2 ways, for example, as 19070689 + 102941316 = 4367^2 + 10146^2 .

It is not a de Polignac number, because 122012005 - 2⁵ = 122011973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12201196 + ... + 12201205.

It is an arithmetic number, because the mean of its divisors is an integer number (36603603).

Almost surely, 2^122012005 is an apocalyptic number.

It is an amenable number.

122012005 is a deficient number, since it is larger than the sum of its proper divisors (24402407).

122012005 is an equidigital number, since it uses as much as digits as its factorization.

122012005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402406.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 122012005 is about 11045.9044446347. The cubic root of 122012005 is about 495.9838338579.

Adding to 122012005 its reverse (500210221), we get a palindrome (622222226).

It can be divided in two parts, 1220 and 12005, that added together give a square (13225 = 115²).

The spelling of 122012005 in words is "one hundred twenty-two million, twelve thousand, five".