13212103002221 has 2 divisors, whose sum is σ = 13212103002222. Its totient is φ = 13212103002220.

The previous prime is 13212103002113. The next prime is 13212103002223. The reversal of 13212103002221 is 12220030121231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9489572665225 + 3722530336996 = 3080515^2 + 1929386^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212103002221 - 2²² = 13212098807917 is a prime.

Together with 13212103002223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13212103002193 and 13212103002202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13212103002223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606051501110 + 6606051501111.

It is an arithmetic number, because the mean of its divisors is an integer number (6606051501111).

Almost surely, 2^{13212103002221} is an apocalyptic number.

It is an amenable number.

13212103002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212103002221 is an equidigital number, since it uses as much as digits as its factorization.

13212103002221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13212103002221 its reverse (12220030121231), we get a palindrome (25432133123452).

The spelling of 13212103002221 in words is "thirteen trillion, two hundred twelve billion, one hundred three million, two thousand, two hundred twenty-one".