12222120213 has 84 divisors (see below), whose sum is σ = 19648777932. Its totient is φ = 7593886080.

The previous prime is 12222120149. The next prime is 12222120223. The reversal of 12222120213 is 31202122221.

12222120213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 680270724 + 11541849489 = 26082^2 + 107433^2 .

It is not a de Polignac number, because 12222120213 - 2⁶ = 12222120149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222120223) 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 83 ways as a sum of consecutive naturals, for example, 15810895 + ... + 15811667.

It is an arithmetic number, because the mean of its divisors is an integer number (233914023).

Almost surely, 2^12222120213 is an apocalyptic number.

It is an amenable number.

12222120213 is a deficient number, since it is larger than the sum of its proper divisors (7426657719).

12222120213 is an frugal number, since it uses more digits than its factorization.

12222120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12222120213 its reverse (31202122221), we get a palindrome (43424242434).

The spelling of 12222120213 in words is "twelve billion, two hundred twenty-two million, one hundred twenty thousand, two hundred thirteen".