20340201109 has 2 divisors, whose sum is σ = 20340201110. Its totient is φ = 20340201108.

The previous prime is 20340201107. The next prime is 20340201113. The reversal of 20340201109 is 90110204302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20284026084 + 56175025 = 142422^2 + 7495^2 .

It is a cyclic number.

It is not a de Polignac number, because 20340201109 - 2¹ = 20340201107 is a prime.

Together with 20340201107, 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 20340201109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20340201107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170100554 + 10170100555.

It is an arithmetic number, because the mean of its divisors is an integer number (10170100555).

Almost surely, 2^20340201109 is an apocalyptic number.

It is an amenable number.

20340201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340201109 is an equidigital number, since it uses as much as digits as its factorization.

20340201109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 20340201109 in words is "twenty billion, three hundred forty million, two hundred one thousand, one hundred nine".