101212218953 has 2 divisors, whose sum is σ = 101212218954. Its totient is φ = 101212218952.

The previous prime is 101212218937. The next prime is 101212219037. The reversal of 101212218953 is 359812212101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100076057104 + 1136161849 = 316348^2 + 33707^2 .

It is an emirp because it is prime and its reverse (359812212101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101212218953 - 2⁴ = 101212218937 is a prime.

It is not a weakly prime, because it can be changed into another prime (101212248953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606109476 + 50606109477.

It is an arithmetic number, because the mean of its divisors is an integer number (50606109477).

Almost surely, 2^101212218953 is an apocalyptic number.

It is an amenable number.

101212218953 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212218953 is an equidigital number, since it uses as much as digits as its factorization.

101212218953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 101212218953 in words is "one hundred one billion, two hundred twelve million, two hundred eighteen thousand, nine hundred fifty-three".