121310303221 has 2 divisors, whose sum is σ = 121310303222. Its totient is φ = 121310303220.

The previous prime is 121310303209. The next prime is 121310303237. The reversal of 121310303221 is 122303013121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106040758321 + 15269544900 = 325639^2 + 123570^2 .

It is a cyclic number.

It is not a de Polignac number, because 121310303221 - 2⁹ = 121310302709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121310303021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655151610 + 60655151611.

It is an arithmetic number, because the mean of its divisors is an integer number (60655151611).

Almost surely, 2^121310303221 is an apocalyptic number.

It is an amenable number.

121310303221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310303221 is an equidigital number, since it uses as much as digits as its factorization.

121310303221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121310303221 its reverse (122303013121), we get a palindrome (243613316342).

The spelling of 121310303221 in words is "one hundred twenty-one billion, three hundred ten million, three hundred three thousand, two hundred twenty-one".