121030521 has 8 divisors (see below), whose sum is σ = 161433984. Its totient is φ = 80657040.

The previous prime is 121030519. The next prime is 121030549. The reversal of 121030521 is 125030121.

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

It is not a de Polignac number, because 121030521 - 2¹ = 121030519 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 121030521.

It is not an unprimeable number, because it can be changed into a prime (121030561) 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, 4816 + ... + 16286.

It is an arithmetic number, because the mean of its divisors is an integer number (20179248).

Almost surely, 2^121030521 is an apocalyptic number.

It is an amenable number.

121030521 is a deficient number, since it is larger than the sum of its proper divisors (40403463).

121030521 is a wasteful number, since it uses less digits than its factorization.

121030521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14991.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 121030521 is about 11001.3872307087. The cubic root of 121030521 is about 494.6503274775.

Adding to 121030521 its reverse (125030121), we get a palindrome (246060642).

The spelling of 121030521 in words is "one hundred twenty-one million, thirty thousand, five hundred twenty-one".