12212240311 has 4 divisors (see below), whose sum is σ = 12214831824. Its totient is φ = 12209648800.

The previous prime is 12212240263. The next prime is 12212240353. The reversal of 12212240311 is 11304221221.

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 12212240311 - 2¹⁵ = 12212207543 is a prime.

It is a super-2 number, since 2×12212240311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212240111) 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, 1288675 + ... + 1298116.

It is an arithmetic number, because the mean of its divisors is an integer number (3053707956).

Almost surely, 2^12212240311 is an apocalyptic number.

12212240311 is a deficient number, since it is larger than the sum of its proper divisors (2591513).

12212240311 is an equidigital number, since it uses as much as digits as its factorization.

12212240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591512.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12212240311 its reverse (11304221221), we get a palindrome (23516461532).

The spelling of 12212240311 in words is "twelve billion, two hundred twelve million, two hundred forty thousand, three hundred eleven".