12213312132121 has 2 divisors, whose sum is σ = 12213312132122. Its totient is φ = 12213312132120.

The previous prime is 12213312132101. The next prime is 12213312132127. The reversal of 12213312132121 is 12123121331221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11335268170521 + 878043961600 = 3366789^2 + 937040^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213312132121 - 2⁹ = 12213312131609 is a prime.

It is a super-2 number, since 2×12213312132121² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12213312132127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106656066060 + 6106656066061.

It is an arithmetic number, because the mean of its divisors is an integer number (6106656066061).

Almost surely, 2^{12213312132121} is an apocalyptic number.

It is an amenable number.

12213312132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213312132121 is an equidigital number, since it uses as much as digits as its factorization.

12213312132121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

Adding to 12213312132121 its reverse (12123121331221), we get a palindrome (24336433463342).

The spelling of 12213312132121 in words is "twelve trillion, two hundred thirteen billion, three hundred twelve million, one hundred thirty-two thousand, one hundred twenty-one".