121304421 has 24 divisors (see below), whose sum is σ = 202791680. Its totient is φ = 68436576.

The previous prime is 121304411. The next prime is 121304429. The reversal of 121304421 is 124403121.

It is not a de Polignac number, because 121304421 - 2¹¹ = 121302373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121304394 and 121304403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121304429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7210 + ... + 17163.

Almost surely, 2^121304421 is an apocalyptic number.

It is an amenable number.

121304421 is a deficient number, since it is larger than the sum of its proper divisors (81487259).

121304421 is a wasteful number, since it uses less digits than its factorization.

121304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24465 (or 24462 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121304421 is about 11013.8286258685. The cubic root of 121304421 is about 495.0231883842.

Adding to 121304421 its reverse (124403121), we get a palindrome (245707542).

The spelling of 121304421 in words is "one hundred twenty-one million, three hundred four thousand, four hundred twenty-one".