121301321 has 4 divisors (see below), whose sum is σ = 121348500. Its totient is φ = 121254144.

The previous prime is 121301293. The next prime is 121301351. The reversal of 121301321 is 123103121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123103121 = 2297 ⋅53593.

It can be written as a sum of positive squares in 2 ways, for example, as 111598096 + 9703225 = 10564^2 + 3115^2 .

It is a cyclic number.

It is not a de Polignac number, because 121301321 - 2¹⁰ = 121300297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121301296 and 121301305.

It is not an unprimeable number, because it can be changed into a prime (121301351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19496 + ... + 24953.

It is an arithmetic number, because the mean of its divisors is an integer number (30337125).

Almost surely, 2^121301321 is an apocalyptic number.

It is an amenable number.

121301321 is a deficient number, since it is larger than the sum of its proper divisors (47179).

121301321 is an equidigital number, since it uses as much as digits as its factorization.

121301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47178.

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

The square root of 121301321 is about 11013.6878927996. The cubic root of 121301321 is about 495.0189714866.

Adding to 121301321 its reverse (123103121), we get a palindrome (244404442).

The spelling of 121301321 in words is "one hundred twenty-one million, three hundred one thousand, three hundred twenty-one".