11021210212109 has 2 divisors, whose sum is σ = 11021210212110. Its totient is φ = 11021210212108.

The previous prime is 11021210212043. The next prime is 11021210212121. The reversal of 11021210212109 is 90121201212011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9060118060009 + 1961092152100 = 3010003^2 + 1400390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021210212109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021210212409) 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, 5510605106054 + 5510605106055.

It is an arithmetic number, because the mean of its divisors is an integer number (5510605106055).

Almost surely, 2^{11021210212109} is an apocalyptic number.

It is an amenable number.

11021210212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021210212109 is an equidigital number, since it uses as much as digits as its factorization.

11021210212109 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 23.

The spelling of 11021210212109 in words is "eleven trillion, twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred nine".