213203230330121 has 16 divisors (see below), whose sum is σ = 223627857188736. Its totient is φ = 202874867813376.

The previous prime is 213203230330093. The next prime is 213203230330133. The reversal of 213203230330121 is 121033032302312.

It is a cyclic number.

It is not a de Polignac number, because 213203230330121 - 2²² = 213203226135817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213203230320121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647765231 + ... + 648094283.

It is an arithmetic number, because the mean of its divisors is an integer number (13976741074296).

Almost surely, 2^{213203230330121} is an apocalyptic number.

It is an amenable number.

213203230330121 is a deficient number, since it is larger than the sum of its proper divisors (10424626858615).

213203230330121 is a wasteful number, since it uses less digits than its factorization.

213203230330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475232.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 213203230330121 its reverse (121033032302312), we get a palindrome (334236262632433).

The spelling of 213203230330121 in words is "two hundred thirteen trillion, two hundred three billion, two hundred thirty million, three hundred thirty thousand, one hundred twenty-one".