121021313 has 8 divisors (see below), whose sum is σ = 140920128. Its totient is φ = 101775024.

The previous prime is 121021301. The next prime is 121021319. The reversal of 121021313 is 313120121.

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 121021313 - 2⁸ = 121021057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121021319) 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, 162731 + ... + 163472.

It is an arithmetic number, because the mean of its divisors is an integer number (17615016).

Almost surely, 2^121021313 is an apocalyptic number.

It is an amenable number.

121021313 is a deficient number, since it is larger than the sum of its proper divisors (19898815).

121021313 is an equidigital number, since it uses as much as digits as its factorization.

121021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326263.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121021313 is about 11000.9687300710. The cubic root of 121021313 is about 494.6377828298.

Adding to 121021313 its reverse (313120121), we get a palindrome (434141434).

The spelling of 121021313 in words is "one hundred twenty-one million, twenty-one thousand, three hundred thirteen".