10012002020261 has 2 divisors, whose sum is σ = 10012002020262. Its totient is φ = 10012002020260.

The previous prime is 10012002020233. The next prime is 10012002020327. The reversal of 10012002020261 is 16202020021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8303151747361 + 1708850272900 = 2881519^2 + 1307230^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012002020261 - 2⁶ = 10012002020197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10012002020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006001010130 + 5006001010131.

It is an arithmetic number, because the mean of its divisors is an integer number (5006001010131).

Almost surely, 2^{10012002020261} is an apocalyptic number.

It is an amenable number.

10012002020261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012002020261 is an equidigital number, since it uses as much as digits as its factorization.

10012002020261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10012002020261 its reverse (16202020021001), we get a palindrome (26214022041262).

The spelling of 10012002020261 in words is "ten trillion, twelve billion, two million, twenty thousand, two hundred sixty-one".