12221133203213 has 36 divisors (see below), whose sum is σ = 14056259766780. Its totient is φ = 10616727327360.

The previous prime is 12221133203189. The next prime is 12221133203221. The reversal of 12221133203213 is 31230233112221.

It can be written as a sum of positive squares in 2 ways, for example, as 11689848197764 + 531285005449 = 3419042^2 + 728893^2 .

It is not a de Polignac number, because 12221133203213 - 2¹² = 12221133199117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221133203233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66028883 + ... + 66213711.

Almost surely, 2^{12221133203213} is an apocalyptic number.

It is an amenable number.

12221133203213 is a deficient number, since it is larger than the sum of its proper divisors (1835126563567).

12221133203213 is a wasteful number, since it uses less digits than its factorization.

12221133203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185930 (or 185896 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12221133203213 its reverse (31230233112221), we get a palindrome (43451366315434).

The spelling of 12221133203213 in words is "twelve trillion, two hundred twenty-one billion, one hundred thirty-three million, two hundred three thousand, two hundred thirteen".