113121225424 has 40 divisors (see below), whose sum is σ = 220587072992. Its totient is φ = 56195752320.

The previous prime is 113121225421. The next prime is 113121225443. The reversal of 113121225424 is 424522121311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 113121225392 and 113121225401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121225421) 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, 12673027 + ... + 12681949.

Almost surely, 2^113121225424 is an apocalyptic number.

It is an amenable number.

113121225424 is a deficient number, since it is larger than the sum of its proper divisors (107465847568).

113121225424 is a wasteful number, since it uses less digits than its factorization.

113121225424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13955 (or 13949 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

Adding to 113121225424 its reverse (424522121311), we get a palindrome (537643346735).

The spelling of 113121225424 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred twenty-five thousand, four hundred twenty-four".