206115202001 has 2 divisors, whose sum is σ = 206115202002. Its totient is φ = 206115202000.

The previous prime is 206115201979. The next prime is 206115202037. The reversal of 206115202001 is 100202511602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175560162001 + 30555040000 = 418999^2 + 174800^2 .

It is a cyclic number.

It is not a de Polignac number, because 206115202001 - 2¹⁸ = 206114939857 is a prime.

It is not a weakly prime, because it can be changed into another prime (206115292001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103057601000 + 103057601001.

It is an arithmetic number, because the mean of its divisors is an integer number (103057601001).

Almost surely, 2^206115202001 is an apocalyptic number.

It is an amenable number.

206115202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

206115202001 is an equidigital number, since it uses as much as digits as its factorization.

206115202001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 206115202001 its reverse (100202511602), we get a palindrome (306317713603).

The spelling of 206115202001 in words is "two hundred six billion, one hundred fifteen million, two hundred two thousand, one".