213421203303 has 32 divisors (see below), whose sum is σ = 354825070080. Its totient is φ = 110853480960.

The previous prime is 213421203299. The next prime is 213421203343. The reversal of 213421203303 is 303302124312.

It is not a de Polignac number, because 213421203303 - 2² = 213421203299 is a prime.

It is a super-2 number, since 2×213421203303² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213421203343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1811451 + ... + 1925667.

It is an arithmetic number, because the mean of its divisors is an integer number (11088283440).

Almost surely, 2^213421203303 is an apocalyptic number.

213421203303 is a deficient number, since it is larger than the sum of its proper divisors (141403866777).

213421203303 is a wasteful number, since it uses less digits than its factorization.

213421203303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122327.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 213421203303 its reverse (303302124312), we get a palindrome (516723327615).

The spelling of 213421203303 in words is "two hundred thirteen billion, four hundred twenty-one million, two hundred three thousand, three hundred three".