121004421 has 8 divisors (see below), whose sum is σ = 162184704. Its totient is φ = 80246880.

The previous prime is 121004417. The next prime is 121004423. The reversal of 121004421 is 124400121.

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

It is not a de Polignac number, because 121004421 - 2² = 121004417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121004421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121004423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105016 + ... + 106161.

It is an arithmetic number, because the mean of its divisors is an integer number (20273088).

Almost surely, 2^121004421 is an apocalyptic number.

It is an amenable number.

121004421 is a deficient number, since it is larger than the sum of its proper divisors (41180283).

121004421 is a wasteful number, since it uses less digits than its factorization.

121004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211371.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 121004421 is about 11000.2009527099. The cubic root of 121004421 is about 494.6147681227.

Adding to 121004421 its reverse (124400121), we get a palindrome (245404542).

The spelling of 121004421 in words is "one hundred twenty-one million, four thousand, four hundred twenty-one".