212010013109 has 2 divisors, whose sum is σ = 212010013110. Its totient is φ = 212010013108.

The previous prime is 212010013087. The next prime is 212010013151. The reversal of 212010013109 is 901310010212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149761260100 + 62248753009 = 386990^2 + 249497^2 .

It is a cyclic number.

It is not a de Polignac number, because 212010013109 - 2⁸ = 212010012853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212010016109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005006554 + 106005006555.

It is an arithmetic number, because the mean of its divisors is an integer number (106005006555).

Almost surely, 2^212010013109 is an apocalyptic number.

It is an amenable number.

212010013109 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010013109 is an equidigital number, since it uses as much as digits as its factorization.

212010013109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 212010013109 in words is "two hundred twelve billion, ten million, thirteen thousand, one hundred nine".