201010210021109 has 2 divisors, whose sum is σ = 201010210021110. Its totient is φ = 201010210021108.

The previous prime is 201010210021081. The next prime is 201010210021147. The reversal of 201010210021109 is 901120012010102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186414921958225 + 14595288062884 = 13653385^2 + 3820378^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010210021109 - 2⁸ = 201010210020853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201010210021169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505105010554 + 100505105010555.

It is an arithmetic number, because the mean of its divisors is an integer number (100505105010555).

Almost surely, 2^{201010210021109} is an apocalyptic number.

It is an amenable number.

201010210021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010210021109 is an equidigital number, since it uses as much as digits as its factorization.

201010210021109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 201010210021109 in words is "two hundred one trillion, ten billion, two hundred ten million, twenty-one thousand, one hundred nine".