213121411323 has 32 divisors (see below), whose sum is σ = 295188160512. Its totient is φ = 136678752000.

The previous prime is 213121411253. The next prime is 213121411333. The reversal of 213121411323 is 323114121312.

It is not a de Polignac number, because 213121411323 - 2¹⁴ = 213121394939 is a prime.

It is a super-2 number, since 2×213121411323² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213121411293 and 213121411302.

It is not an unprimeable number, because it can be changed into a prime (213121411333) 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, 2504373 + ... + 2588073.

It is an arithmetic number, because the mean of its divisors is an integer number (9224630016).

Almost surely, 2^213121411323 is an apocalyptic number.

213121411323 is a deficient number, since it is larger than the sum of its proper divisors (82066749189).

213121411323 is a wasteful number, since it uses less digits than its factorization.

213121411323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84035.

The product of its digits is 864, while the sum is 24.

Adding to 213121411323 its reverse (323114121312), we get a palindrome (536235532635).

The spelling of 213121411323 in words is "two hundred thirteen billion, one hundred twenty-one million, four hundred eleven thousand, three hundred twenty-three".