121021303 has 8 divisors (see below), whose sum is σ = 134535296. Its totient is φ = 108108000.

The previous prime is 121021301. The next prime is 121021319. The reversal of 121021303 is 303120121.

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

It is not a de Polignac number, because 121021303 - 2¹ = 121021301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021301) 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, 149748 + ... + 150553.

It is an arithmetic number, because the mean of its divisors is an integer number (16816912).

Almost surely, 2^121021303 is an apocalyptic number.

121021303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121021303 is a deficient number, since it is larger than the sum of its proper divisors (13513993).

121021303 is a wasteful number, since it uses less digits than its factorization.

121021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300345.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121021303 is about 11000.9682755656. The cubic root of 121021303 is about 494.6377692058.

Adding to 121021303 its reverse (303120121), we get a palindrome (424141424).

The spelling of 121021303 in words is "one hundred twenty-one million, twenty-one thousand, three hundred three".