12422255521 has 16 divisors (see below), whose sum is σ = 14168701008. Its totient is φ = 10789171200.

The previous prime is 12422255501. The next prime is 12422255561. The reversal of 12422255521 is 12555222421.

It can be written as a sum of positive squares in 8 ways, for example, as 154256400 + 12267999121 = 12420^2 + 110761^2 .

It is a cyclic number.

It is not a de Polignac number, because 12422255521 - 2³³ = 3832320929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12422255501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1215051 + ... + 1225231.

It is an arithmetic number, because the mean of its divisors is an integer number (885543813).

Almost surely, 2^12422255521 is an apocalyptic number.

It is an amenable number.

12422255521 is a deficient number, since it is larger than the sum of its proper divisors (1746445487).

12422255521 is a wasteful number, since it uses less digits than its factorization.

12422255521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15732.

The product of its digits is 16000, while the sum is 31.

Adding to 12422255521 its reverse (12555222421), we get a palindrome (24977477942).

It can be divided in two parts, 1242225 and 5521, that multiplied together give a square (6858324225 = 82815²).

The spelling of 12422255521 in words is "twelve billion, four hundred twenty-two million, two hundred fifty-five thousand, five hundred twenty-one".