12153220405 has 8 divisors (see below), whose sum is σ = 14584506552. Its totient is φ = 9722148288.

The previous prime is 12153220403. The next prime is 12153220441. The reversal of 12153220405 is 50402235121.

It can be written as a sum of positive squares in 4 ways, for example, as 614593681 + 11538626724 = 24791^2 + 107418^2 .

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 12153220405 - 2¹ = 12153220403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12153220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12153220403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126439 + ... + 200731.

It is an arithmetic number, because the mean of its divisors is an integer number (1823063319).

Almost surely, 2^12153220405 is an apocalyptic number.

It is an amenable number.

12153220405 is a deficient number, since it is larger than the sum of its proper divisors (2431286147).

12153220405 is an equidigital number, since it uses as much as digits as its factorization.

12153220405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107015.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12153220405 its reverse (50402235121), we get a palindrome (62555455526).

The spelling of 12153220405 in words is "twelve billion, one hundred fifty-three million, two hundred twenty thousand, four hundred five".