12213132112001 has 4 divisors (see below), whose sum is σ = 12244528338900. Its totient is φ = 12181735885104.

The previous prime is 12213132111991. The next prime is 12213132112057. The reversal of 12213132112001 is 10021123131221.

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 1979435141776 + 10233696970225 = 1406924^2 + 3199015^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213132112001 - 2²⁶ = 12213065003137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12213132412001) 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, 15698112866 + ... + 15698113643.

It is an arithmetic number, because the mean of its divisors is an integer number (3061132084725).

Almost surely, 2^{12213132112001} is an apocalyptic number.

It is an amenable number.

12213132112001 is a deficient number, since it is larger than the sum of its proper divisors (31396226899).

12213132112001 is an equidigital number, since it uses as much as digits as its factorization.

12213132112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31396226898.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12213132112001 its reverse (10021123131221), we get a palindrome (22234255243222).

The spelling of 12213132112001 in words is "twelve trillion, two hundred thirteen billion, one hundred thirty-two million, one hundred twelve thousand, one".