201112203109 has 2 divisors, whose sum is σ = 201112203110. Its totient is φ = 201112203108.

The previous prime is 201112203107. The next prime is 201112203133. The reversal of 201112203109 is 901302211102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167692707009 + 33419496100 = 409503^2 + 182810^2 .

It is a cyclic number.

It is not a de Polignac number, because 201112203109 - 2¹ = 201112203107 is a prime.

It is a super-2 number, since 2×201112203109² (a number of 23 digits) contains 22 as substring.

Together with 201112203107, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 201112203109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201112203107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100556101554 + 100556101555.

It is an arithmetic number, because the mean of its divisors is an integer number (100556101555).

Almost surely, 2^201112203109 is an apocalyptic number.

It is an amenable number.

201112203109 is a deficient number, since it is larger than the sum of its proper divisors (1).

201112203109 is an equidigital number, since it uses as much as digits as its factorization.

201112203109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 201112203109 in words is "two hundred one billion, one hundred twelve million, two hundred three thousand, one hundred nine".