213111013321 has 4 divisors (see below), whose sum is σ = 213538090000. Its totient is φ = 212683936644.

The previous prime is 213111013319. The next prime is 213111013369. The reversal of 213111013321 is 123310111312.

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 213111013321 - 2¹ = 213111013319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213111013021) 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, 213537591 + ... + 213538588.

It is an arithmetic number, because the mean of its divisors is an integer number (53384522500).

Almost surely, 2^213111013321 is an apocalyptic number.

It is an amenable number.

213111013321 is a deficient number, since it is larger than the sum of its proper divisors (427076679).

213111013321 is an equidigital number, since it uses as much as digits as its factorization.

213111013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427076678.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 213111013321 its reverse (123310111312), we get a palindrome (336421124633).

The spelling of 213111013321 in words is "two hundred thirteen billion, one hundred eleven million, thirteen thousand, three hundred twenty-one".