12211223010311 has 4 divisors (see below), whose sum is σ = 13150547857272. Its totient is φ = 11271898163352.

The previous prime is 12211223010307. The next prime is 12211223010353. The reversal of 12211223010311 is 11301032211221.

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 12211223010311 - 2² = 12211223010307 is a prime.

It is a super-2 number, since 2×12211223010311² (a number of 27 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 (12211223010361) 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, 469662423461 + ... + 469662423486.

It is an arithmetic number, because the mean of its divisors is an integer number (3287636964318).

Almost surely, 2^{12211223010311} is an apocalyptic number.

12211223010311 is a deficient number, since it is larger than the sum of its proper divisors (939324846961).

12211223010311 is an equidigital number, since it uses as much as digits as its factorization.

12211223010311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939324846960.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12211223010311 its reverse (11301032211221), we get a palindrome (23512255221532).

The spelling of 12211223010311 in words is "twelve trillion, two hundred eleven billion, two hundred twenty-three million, ten thousand, three hundred eleven".