12122552005 has 8 divisors (see below), whose sum is σ = 14549944824. Its totient is φ = 9696120000.

The previous prime is 12122551993. The next prime is 12122552023. The reversal of 12122552005 is 50025522121.

It can be written as a sum of positive squares in 4 ways, for example, as 173001409 + 11949550596 = 13153^2 + 109314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12122552005 - 2¹⁵ = 12122519237 is a prime.

It is a super-2 number, since 2×12122552005² (a number of 21 digits) contains 22 as substring.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212146 + ... + 263155.

It is an arithmetic number, because the mean of its divisors is an integer number (1818743103).

Almost surely, 2^12122552005 is an apocalyptic number.

It is an amenable number.

12122552005 is a deficient number, since it is larger than the sum of its proper divisors (2427392819).

12122552005 is an equidigital number, since it uses as much as digits as its factorization.

12122552005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480407.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 12122552005 in words is "twelve billion, one hundred twenty-two million, five hundred fifty-two thousand, five".