213304013243121 has 16 divisors (see below), whose sum is σ = 284429896466688. Its totient is φ = 142190403379200.

The previous prime is 213304013243093. The next prime is 213304013243141. The reversal of 213304013243121 is 121342310403312.

It is not a de Polignac number, because 213304013243121 - 2⁵ = 213304013243089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213304013243141) 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, 2087256136 + ... + 2087358326.

It is an arithmetic number, because the mean of its divisors is an integer number (17776868529168).

Almost surely, 2^{213304013243121} is an apocalyptic number.

It is an amenable number.

213304013243121 is a deficient number, since it is larger than the sum of its proper divisors (71125883223567).

213304013243121 is a wasteful number, since it uses less digits than its factorization.

213304013243121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155432.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 213304013243121 its reverse (121342310403312), we get a palindrome (334646323646433).

The spelling of 213304013243121 in words is "two hundred thirteen trillion, three hundred four billion, thirteen million, two hundred forty-three thousand, one hundred twenty-one".