121223122424 has 32 divisors (see below), whose sum is σ = 234647063040. Its totient is φ = 58650933600.

The previous prime is 121223122411. The next prime is 121223122439. The reversal of 121223122424 is 424221322121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121223122393 and 121223122402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461119 + ... + 4488209.

It is an arithmetic number, because the mean of its divisors is an integer number (7332720720).

Almost surely, 2^121223122424 is an apocalyptic number.

It is an amenable number.

121223122424 is a deficient number, since it is larger than the sum of its proper divisors (113423940616).

121223122424 is a wasteful number, since it uses less digits than its factorization.

121223122424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45171 (or 45167 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 121223122424 its reverse (424221322121), we get a palindrome (545444444545).

The spelling of 121223122424 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred twenty-two thousand, four hundred twenty-four".