12121480801 has 4 divisors (see below), whose sum is σ = 12136464900. Its totient is φ = 12106496704.

The previous prime is 12121480783. The next prime is 12121480807. The reversal of 12121480801 is 10808412121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8515598400 + 3605882401 = 92280^2 + 60049^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121480801 - 2¹³ = 12121472609 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 12121480801.

It is not an unprimeable number, because it can be changed into a prime (12121480807) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7490836 + ... + 7492453.

It is an arithmetic number, because the mean of its divisors is an integer number (3034116225).

Almost surely, 2^12121480801 is an apocalyptic number.

It is an amenable number.

12121480801 is a deficient number, since it is larger than the sum of its proper divisors (14984099).

12121480801 is an equidigital number, since it uses as much as digits as its factorization.

12121480801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14984098.

The product of its (nonzero) digits is 1024, while the sum is 28.

Adding to 12121480801 its reverse (10808412121), we get a palindrome (22929892922).

The spelling of 12121480801 in words is "twelve billion, one hundred twenty-one million, four hundred eighty thousand, eight hundred one".