12225243501 has 12 divisors (see below), whose sum is σ = 17771162812. Its totient is φ = 8098249536.

The previous prime is 12225243493. The next prime is 12225243523. The reversal of 12225243501 is 10534252221.

12225243501 is a `hidden beast` number, since 1 + 2 + 225 + 2 + 435 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2299106601 + 9926136900 = 47949^2 + 99630^2 .

It is not a de Polignac number, because 12225243501 - 2³ = 12225243493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225243551) 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 11 ways as a sum of consecutive naturals, for example, 4324576 + ... + 4327401.

Almost surely, 2^12225243501 is an apocalyptic number.

It is an amenable number.

12225243501 is a deficient number, since it is larger than the sum of its proper divisors (5545919311).

12225243501 is a wasteful number, since it uses less digits than its factorization.

12225243501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652140 (or 8652137 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12225243501 its reverse (10534252221), we get a palindrome (22759495722).

The spelling of 12225243501 in words is "twelve billion, two hundred twenty-five million, two hundred forty-three thousand, five hundred one".