20212113330109 has 2 divisors, whose sum is σ = 20212113330110. Its totient is φ = 20212113330108.

The previous prime is 20212113330077. The next prime is 20212113330121. The reversal of 20212113330109 is 90103331121202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18621684631225 + 1590428698884 = 4315285^2 + 1261122^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212113330109 - 2⁵ = 20212113330077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212113130109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106056665054 + 10106056665055.

It is an arithmetic number, because the mean of its divisors is an integer number (10106056665055).

Almost surely, 2^{20212113330109} is an apocalyptic number.

It is an amenable number.

20212113330109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212113330109 is an equidigital number, since it uses as much as digits as its factorization.

20212113330109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 20212113330109 in words is "twenty trillion, two hundred twelve billion, one hundred thirteen million, three hundred thirty thousand, one hundred nine".