212002103909 has 2 divisors, whose sum is σ = 212002103910. Its totient is φ = 212002103908.

The previous prime is 212002103903. The next prime is 212002103939. The reversal of 212002103909 is 909301200212.

212002103909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184515779809 + 27486324100 = 429553^2 + 165790^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002103909 - 2¹⁶ = 212002038373 is a prime.

It is a super-3 number, since 3×212002103909³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212002103903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106001051954 + 106001051955.

It is an arithmetic number, because the mean of its divisors is an integer number (106001051955).

Almost surely, 2^212002103909 is an apocalyptic number.

It is an amenable number.

212002103909 is a deficient number, since it is larger than the sum of its proper divisors (1).

212002103909 is an equidigital number, since it uses as much as digits as its factorization.

212002103909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 212002103909 in words is "two hundred twelve billion, two million, one hundred three thousand, nine hundred nine".