12212331311 has 4 divisors (see below), whose sum is σ = 12233136552. Its totient is φ = 12191526072.

The previous prime is 12212331283. The next prime is 12212331347. The reversal of 12212331311 is 11313321221.

It is a happy number.

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 12212331311 - 2¹⁴ = 12212314927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212331511) 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, 10401740 + ... + 10402913.

It is an arithmetic number, because the mean of its divisors is an integer number (3058284138).

Almost surely, 2^12212331311 is an apocalyptic number.

12212331311 is a deficient number, since it is larger than the sum of its proper divisors (20805241).

12212331311 is an equidigital number, since it uses as much as digits as its factorization.

12212331311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20805240.

The product of its digits is 216, while the sum is 20.

Adding to 12212331311 its reverse (11313321221), we get a palindrome (23525652532).

The spelling of 12212331311 in words is "twelve billion, two hundred twelve million, three hundred thirty-one thousand, three hundred eleven".