13212321213281 has 2 divisors, whose sum is σ = 13212321213282. Its totient is φ = 13212321213280.

The previous prime is 13212321213271. The next prime is 13212321213337. The reversal of 13212321213281 is 18231212321231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13201530158881 + 10791054400 = 3633391^2 + 103880^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212321213281 - 2²⁶ = 13212254104417 is a prime.

It is a super-2 number, since 2×13212321213281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13212321213251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606160606640 + 6606160606641.

It is an arithmetic number, because the mean of its divisors is an integer number (6606160606641).

Almost surely, 2^{13212321213281} is an apocalyptic number.

It is an amenable number.

13212321213281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212321213281 is an equidigital number, since it uses as much as digits as its factorization.

13212321213281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The spelling of 13212321213281 in words is "thirteen trillion, two hundred twelve billion, three hundred twenty-one million, two hundred thirteen thousand, two hundred eighty-one".