12221222311 has 4 divisors (see below), whose sum is σ = 12642643800. Its totient is φ = 11799800824.

The previous prime is 12221222291. The next prime is 12221222341. The reversal of 12221222311 is 11322212221.

12221222311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11322212221 = 1741 ⋅6503281.

It is a cyclic number.

It is not a de Polignac number, because 12221222311 - 2¹³ = 12221214119 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 (12221222341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210710701 + ... + 210710758.

It is an arithmetic number, because the mean of its divisors is an integer number (3160660950).

Almost surely, 2^12221222311 is an apocalyptic number.

12221222311 is a deficient number, since it is larger than the sum of its proper divisors (421421489).

12221222311 is an equidigital number, since it uses as much as digits as its factorization.

12221222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421421488.

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

Adding to 12221222311 its reverse (11322212221), we get a palindrome (23543434532).

The spelling of 12221222311 in words is "twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred eleven".