121021223303 has 2 divisors, whose sum is σ = 121021223304. Its totient is φ = 121021223302.

The previous prime is 121021223287. The next prime is 121021223327. The reversal of 121021223303 is 303322120121.

It is a weak prime.

It is an emirp because it is prime and its reverse (303322120121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121021223303 - 2⁴ = 121021223287 is a prime.

It is a super-2 number, since 2×121021223303² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121021223333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510611651 + 60510611652.

It is an arithmetic number, because the mean of its divisors is an integer number (60510611652).

Almost surely, 2^121021223303 is an apocalyptic number.

121021223303 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021223303 is an equidigital number, since it uses as much as digits as its factorization.

121021223303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121021223303 its reverse (303322120121), we get a palindrome (424343343424).

The spelling of 121021223303 in words is "one hundred twenty-one billion, twenty-one million, two hundred twenty-three thousand, three hundred three".