213111212329 has 4 divisors (see below), whose sum is σ = 213118583184. Its totient is φ = 213103841476.

The previous prime is 213111212323. The next prime is 213111212411. The reversal of 213111212329 is 923212111312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213111212329 - 2¹¹ = 213111210281 is a prime.

It is a super-2 number, since 2×213111212329² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213111212297 and 213111212306.

It is not an unprimeable number, because it can be changed into a prime (213111212323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3641887 + ... + 3699940.

It is an arithmetic number, because the mean of its divisors is an integer number (53279645796).

Almost surely, 2^213111212329 is an apocalyptic number.

It is an amenable number.

213111212329 is a deficient number, since it is larger than the sum of its proper divisors (7370855).

213111212329 is an equidigital number, since it uses as much as digits as its factorization.

213111212329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370854.

The product of its digits is 1296, while the sum is 28.

The spelling of 213111212329 in words is "two hundred thirteen billion, one hundred eleven million, two hundred twelve thousand, three hundred twenty-nine".