12222012311 has 4 divisors (see below), whose sum is σ = 12222303000. Its totient is φ = 12221721624.

The previous prime is 12222012293. The next prime is 12222012331. The reversal of 12222012311 is 11321022221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12222012311 - 2¹⁰ = 12222011287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12222012311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222012331) 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, 68861 + ... + 170838.

It is an arithmetic number, because the mean of its divisors is an integer number (3055575750).

Almost surely, 2^12222012311 is an apocalyptic number.

12222012311 is a deficient number, since it is larger than the sum of its proper divisors (290689).

12222012311 is an equidigital number, since it uses as much as digits as its factorization.

12222012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290688.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12222012311 its reverse (11321022221), we get a palindrome (23543034532).

The spelling of 12222012311 in words is "twelve billion, two hundred twenty-two million, twelve thousand, three hundred eleven".