12110221213 has 4 divisors (see below), whose sum is σ = 12142688668. Its totient is φ = 12077753760.

The previous prime is 12110221171. The next prime is 12110221229. The reversal of 12110221213 is 31212201121.

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 5891637049 + 6218584164 = 76757^2 + 78858^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110221213 - 2¹⁷ = 12110090141 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 (12110221243) 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, 16233168 + ... + 16233913.

It is an arithmetic number, because the mean of its divisors is an integer number (3035672167).

Almost surely, 2^12110221213 is an apocalyptic number.

It is an amenable number.

12110221213 is a deficient number, since it is larger than the sum of its proper divisors (32467455).

12110221213 is an equidigital number, since it uses as much as digits as its factorization.

12110221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32467454.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12110221213 its reverse (31212201121), we get a palindrome (43322422334).

The spelling of 12110221213 in words is "twelve billion, one hundred ten million, two hundred twenty-one thousand, two hundred thirteen".