121024221 has 8 divisors (see below), whose sum is σ = 166930080. Its totient is φ = 77900592.

The previous prime is 121024213. The next prime is 121024223. The reversal of 121024221 is 122420121.

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

It is not a de Polignac number, because 121024221 - 2³ = 121024213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121024221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121024223) 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, 695455 + ... + 695628.

It is an arithmetic number, because the mean of its divisors is an integer number (20866260).

Almost surely, 2^121024221 is an apocalyptic number.

It is an amenable number.

121024221 is a deficient number, since it is larger than the sum of its proper divisors (45905859).

121024221 is a wasteful number, since it uses less digits than its factorization.

121024221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391115.

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

The square root of 121024221 is about 11001.1008994555. The cubic root of 121024221 is about 494.6417446531.

Adding to 121024221 its reverse (122420121), we get a palindrome (243444342).

The spelling of 121024221 in words is "one hundred twenty-one million, twenty-four thousand, two hundred twenty-one".