320203230121 has 16 divisors (see below), whose sum is σ = 335818663488. Its totient is φ = 304967174400.

The previous prime is 320203230089. The next prime is 320203230131. The reversal of 320203230121 is 121032302023.

It is a cyclic number.

It is not a de Polignac number, because 320203230121 - 2⁵ = 320203230089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320203230131) 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 in 15 ways as a sum of consecutive naturals, for example, 3357325 + ... + 3451381.

It is an arithmetic number, because the mean of its divisors is an integer number (20988666468).

Almost surely, 2^320203230121 is an apocalyptic number.

It is an amenable number.

320203230121 is a deficient number, since it is larger than the sum of its proper divisors (15615433367).

320203230121 is a wasteful number, since it uses less digits than its factorization.

320203230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96072.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 320203230121 its reverse (121032302023), we get a palindrome (441235532144).

It can be divided in two parts, 3202032 and 30121, that added together give a triangular number (3232153 = T₂₅₄₂).

The spelling of 320203230121 in words is "three hundred twenty billion, two hundred three million, two hundred thirty thousand, one hundred twenty-one".