102100012220909 has 2 divisors, whose sum is σ = 102100012220910. Its totient is φ = 102100012220908.

The previous prime is 102100012220903. The next prime is 102100012220917. The reversal of 102100012220909 is 909022210001201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100654126218409 + 1445886002500 = 10032653^2 + 1202450^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100012220909 - 2⁸ = 102100012220653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100012220903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050006110454 + 51050006110455.

It is an arithmetic number, because the mean of its divisors is an integer number (51050006110455).

Almost surely, 2^{102100012220909} is an apocalyptic number.

It is an amenable number.

102100012220909 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100012220909 is an equidigital number, since it uses as much as digits as its factorization.

102100012220909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 102100012220909 in words is "one hundred two trillion, one hundred billion, twelve million, two hundred twenty thousand, nine hundred nine".