10010206861 has 2 divisors, whose sum is σ = 10010206862. Its totient is φ = 10010206860.

The previous prime is 10010206819. The next prime is 10010206879. The reversal of 10010206861 is 16860201001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7158006025 + 2852200836 = 84605^2 + 53406^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010206861 - 2⁷ = 10010206733 is a prime.

It is a super-2 number, since 2×10010206861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10010246861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005103430 + 5005103431.

It is an arithmetic number, because the mean of its divisors is an integer number (5005103431).

Almost surely, 2^10010206861 is an apocalyptic number.

It is an amenable number.

10010206861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010206861 is an equidigital number, since it uses as much as digits as its factorization.

10010206861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 10010206861 its reverse (16860201001), we get a palindrome (26870407862).

The spelling of 10010206861 in words is "ten billion, ten million, two hundred six thousand, eight hundred sixty-one".