121024421 has 8 divisors (see below), whose sum is σ = 138589440. Its totient is φ = 103528368.

The previous prime is 121024391. The next prime is 121024429. The reversal of 121024421 is 124420121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121024421 - 2¹⁸ = 120762277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121024421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121024429) 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 7 ways as a sum of consecutive naturals, for example, 13421 + ... + 20546.

It is an arithmetic number, because the mean of its divisors is an integer number (17323680).

Almost surely, 2^121024421 is an apocalyptic number.

It is an amenable number.

121024421 is a deficient number, since it is larger than the sum of its proper divisors (17565019).

121024421 is an equidigital number, since it uses as much as digits as its factorization.

121024421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34483.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121024421 is about 11001.1099894511. The cubic root of 121024421 is about 494.6420171282.

Adding to 121024421 its reverse (124420121), we get a palindrome (245444542).

The spelling of 121024421 in words is "one hundred twenty-one million, twenty-four thousand, four hundred twenty-one".