12422051555 has 32 divisors (see below), whose sum is σ = 15875481600. Its totient is φ = 9298662912.

The previous prime is 12422051549. The next prime is 12422051597. The reversal of 12422051555 is 55515022421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12422051555 - 2⁶ = 12422051491 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 17276486 + ... + 17277204.

It is an arithmetic number, because the mean of its divisors is an integer number (496108800).

Almost surely, 2^12422051555 is an apocalyptic number.

12422051555 is a deficient number, since it is larger than the sum of its proper divisors (3453430045).

12422051555 is a wasteful number, since it uses less digits than its factorization.

12422051555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 12422051555 its reverse (55515022421), we get a palindrome (67937073976).

The spelling of 12422051555 in words is "twelve billion, four hundred twenty-two million, fifty-one thousand, five hundred fifty-five".