206052021001 has 2 divisors, whose sum is σ = 206052021002. Its totient is φ = 206052021000.

The previous prime is 206052020981. The next prime is 206052021037. The reversal of 206052021001 is 100120250602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205249772025 + 802248976 = 453045^2 + 28324^2 .

It is a cyclic number.

It is not a de Polignac number, because 206052021001 - 2⁵ = 206052020969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206052021001.

It is not a weakly prime, because it can be changed into another prime (206052021101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103026010500 + 103026010501.

It is an arithmetic number, because the mean of its divisors is an integer number (103026010501).

Almost surely, 2^206052021001 is an apocalyptic number.

It is an amenable number.

206052021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

206052021001 is an equidigital number, since it uses as much as digits as its factorization.

206052021001 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 19.

Adding to 206052021001 its reverse (100120250602), we get a palindrome (306172271603).

The spelling of 206052021001 in words is "two hundred six billion, fifty-two million, twenty-one thousand, one".