102212101212281 has 2 divisors, whose sum is σ = 102212101212282. Its totient is φ = 102212101212280.

The previous prime is 102212101212253. The next prime is 102212101212301. The reversal of 102212101212281 is 182212101212201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88048289394025 + 14163811818256 = 9383405^2 + 3763484^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212101212281 - 2¹⁰ = 102212101211257 is a prime.

It is a super-2 number, since 2×102212101212281² (a number of 29 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 102212101212281.

It is not a weakly prime, because it can be changed into another prime (102212101232281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106050606140 + 51106050606141.

It is an arithmetic number, because the mean of its divisors is an integer number (51106050606141).

Almost surely, 2^{102212101212281} is an apocalyptic number.

It is an amenable number.

102212101212281 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212101212281 is an equidigital number, since it uses as much as digits as its factorization.

102212101212281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 26.

Adding to 102212101212281 its reverse (182212101212201), we get a palindrome (284424202424482).

The spelling of 102212101212281 in words is "one hundred two trillion, two hundred twelve billion, one hundred one million, two hundred twelve thousand, two hundred eighty-one".