213112213321 has 16 divisors (see below), whose sum is σ = 249245506944. Its totient is φ = 178431462144.

The previous prime is 213112213273. The next prime is 213112213331. The reversal of 213112213321 is 123312211312.

It is a cyclic number.

It is not a de Polignac number, because 213112213321 - 2¹⁹ = 213111689033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213112213292 and 213112213301.

It is not an unprimeable number, because it can be changed into a prime (213112213331) 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, 1181040 + ... + 1349473.

It is an arithmetic number, because the mean of its divisors is an integer number (15577844184).

Almost surely, 2^213112213321 is an apocalyptic number.

It is an amenable number.

213112213321 is a deficient number, since it is larger than the sum of its proper divisors (36133293623).

213112213321 is a wasteful number, since it uses less digits than its factorization.

213112213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530800.

The product of its digits is 432, while the sum is 22.

Adding to 213112213321 its reverse (123312211312), we get a palindrome (336424424633).

The spelling of 213112213321 in words is "two hundred thirteen billion, one hundred twelve million, two hundred thirteen thousand, three hundred twenty-one".