12211111013 has 4 divisors (see below), whose sum is σ = 12441509388. Its totient is φ = 11980712640.

The previous prime is 12211110979. The next prime is 12211111021. The reversal of 12211111013 is 31011111221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9931716964 + 2279394049 = 99658^2 + 47743^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211111013 - 2¹² = 12211106917 is a prime.

It is a super-2 number, since 2×12211111013² (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 (12211111043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115199108 + ... + 115199213.

It is an arithmetic number, because the mean of its divisors is an integer number (3110377347).

Almost surely, 2^12211111013 is an apocalyptic number.

It is an amenable number.

12211111013 is a deficient number, since it is larger than the sum of its proper divisors (230398375).

12211111013 is an equidigital number, since it uses as much as digits as its factorization.

12211111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230398374.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12211111013 its reverse (31011111221), we get a palindrome (43222222234).

The spelling of 12211111013 in words is "twelve billion, two hundred eleven million, one hundred eleven thousand, thirteen".