202011100111109 has 2 divisors, whose sum is σ = 202011100111110. Its totient is φ = 202011100111108.

The previous prime is 202011100111091. The next prime is 202011100111243. The reversal of 202011100111109 is 901111001110202.

Together with previous prime (202011100111091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135655054881025 + 66356045230084 = 11647105^2 + 8145922^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011100111109 - 2²⁰ = 202011099062533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202011100111309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005550055554 + 101005550055555.

It is an arithmetic number, because the mean of its divisors is an integer number (101005550055555).

Almost surely, 2^{202011100111109} is an apocalyptic number.

It is an amenable number.

202011100111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011100111109 is an equidigital number, since it uses as much as digits as its factorization.

202011100111109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 202011100111109 in words is "two hundred two trillion, eleven billion, one hundred million, one hundred eleven thousand, one hundred nine".