321121030903 has 2 divisors, whose sum is σ = 321121030904. Its totient is φ = 321121030902.

The previous prime is 321121030757. The next prime is 321121030931. The reversal of 321121030903 is 309030121123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321121030903 - 2²⁹ = 320584159991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321121030963) 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, 160560515451 + 160560515452.

It is an arithmetic number, because the mean of its divisors is an integer number (160560515452).

Almost surely, 2^321121030903 is an apocalyptic number.

321121030903 is a deficient number, since it is larger than the sum of its proper divisors (1).

321121030903 is an equidigital number, since it uses as much as digits as its factorization.

321121030903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 321121030903 in words is "three hundred twenty-one billion, one hundred twenty-one million, thirty thousand, nine hundred three".