13212222130981 has 2 divisors, whose sum is σ = 13212222130982. Its totient is φ = 13212222130980.

The previous prime is 13212222130967. The next prime is 13212222131039. The reversal of 13212222130981 is 18903122221231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12890325896100 + 321896234881 = 3590310^2 + 567359^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212222130981 - 2⁵ = 13212222130949 is a prime.

It is a super-2 number, since 2×13212222130981² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13212222130981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13212222130181) 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, 6606111065490 + 6606111065491.

It is an arithmetic number, because the mean of its divisors is an integer number (6606111065491).

Almost surely, 2^{13212222130981} is an apocalyptic number.

It is an amenable number.

13212222130981 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212222130981 is an equidigital number, since it uses as much as digits as its factorization.

13212222130981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 13212222130981 in words is "thirteen trillion, two hundred twelve billion, two hundred twenty-two million, one hundred thirty thousand, nine hundred eighty-one".