12111320213 has 8 divisors (see below), whose sum is σ = 12327272760. Its totient is φ = 11895929280.

The previous prime is 12111320203. The next prime is 12111320227. The reversal of 12111320213 is 31202311121.

It can be written as a sum of positive squares in 4 ways, for example, as 748186609 + 11363133604 = 27353^2 + 106598^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111320213 - 2²⁴ = 12094542997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111320191 and 12111320200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111320203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96770 + ... + 183267.

It is an arithmetic number, because the mean of its divisors is an integer number (1540909095).

Almost surely, 2^12111320213 is an apocalyptic number.

It is an amenable number.

12111320213 is a deficient number, since it is larger than the sum of its proper divisors (215952547).

12111320213 is an equidigital number, since it uses as much as digits as its factorization.

12111320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280807.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12111320213 its reverse (31202311121), we get a palindrome (43313631334).

The spelling of 12111320213 in words is "twelve billion, one hundred eleven million, three hundred twenty thousand, two hundred thirteen".