203213330321 has 16 divisors (see below), whose sum is σ = 217318235904. Its totient is φ = 189349757184.

The previous prime is 203213330297. The next prime is 203213330381. The reversal of 203213330321 is 123033312302.

It is a cyclic number.

It is not a de Polignac number, because 203213330321 - 2²² = 203209136017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203213330381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2844191 + ... + 2914763.

It is an arithmetic number, because the mean of its divisors is an integer number (13582389744).

Almost surely, 2^203213330321 is an apocalyptic number.

It is an amenable number.

203213330321 is a deficient number, since it is larger than the sum of its proper divisors (14104905583).

203213330321 is a wasteful number, since it uses less digits than its factorization.

203213330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72280.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 203213330321 its reverse (123033312302), we get a palindrome (326246642623).

The spelling of 203213330321 in words is "two hundred three billion, two hundred thirteen million, three hundred thirty thousand, three hundred twenty-one".