211012212010009 has 2 divisors, whose sum is σ = 211012212010010. Its totient is φ = 211012212010008.

The previous prime is 211012212010003. The next prime is 211012212010109. The reversal of 211012212010009 is 900010212210112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162206409216784 + 48805802793225 = 12736028^2 + 6986115^2 .

It is a cyclic number.

It is not a de Polignac number, because 211012212010009 - 2⁹ = 211012212009497 is a prime.

It is not a weakly prime, because it can be changed into another prime (211012212010003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506106005004 + 105506106005005.

It is an arithmetic number, because the mean of its divisors is an integer number (105506106005005).

Almost surely, 2^{211012212010009} is an apocalyptic number.

It is an amenable number.

211012212010009 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012212010009 is an equidigital number, since it uses as much as digits as its factorization.

211012212010009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 211012212010009 in words is "two hundred eleven trillion, twelve billion, two hundred twelve million, ten thousand, nine".