1212066005 has 8 divisors (see below), whose sum is σ = 1454685912. Its totient is φ = 969515008.

The previous prime is 1212065999. The next prime is 1212066013. The reversal of 1212066005 is 5006602121.

It can be written as a sum of positive squares in 4 ways, for example, as 538756 + 1211527249 = 734^2 + 34807^2 .

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 1212066005 - 2⁶ = 1212065941 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, 36989 + ... + 61581.

It is an arithmetic number, because the mean of its divisors is an integer number (181835739).

Almost surely, 2^1212066005 is an apocalyptic number.

It is an amenable number.

1212066005 is a deficient number, since it is larger than the sum of its proper divisors (242619907).

1212066005 is an equidigital number, since it uses as much as digits as its factorization.

1212066005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34455.

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

The square root of 1212066005 is about 34814.7383301957. The cubic root of 1212066005 is about 1066.2083766388.

Adding to 1212066005 its reverse (5006602121), we get a palindrome (6218668126).

It can be divided in two parts, 12120 and 66005, that added together give a 7-th power (78125 = 5⁷).

The spelling of 1212066005 in words is "one billion, two hundred twelve million, sixty-six thousand, five".