10012000261 has 2 divisors, whose sum is σ = 10012000262. Its totient is φ = 10012000260.

The previous prime is 10012000259. The next prime is 10012000267. The reversal of 10012000261 is 16200021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7976276100 + 2035724161 = 89310^2 + 45119^2 .

It is an emirp because it is prime and its reverse (16200021001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10012000261 - 2¹ = 10012000259 is a prime.

Together with 10012000259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10012000267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006000130 + 5006000131.

It is an arithmetic number, because the mean of its divisors is an integer number (5006000131).

Almost surely, 2^10012000261 is an apocalyptic number.

It is an amenable number.

10012000261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012000261 is an equidigital number, since it uses as much as digits as its factorization.

10012000261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10012000261 its reverse (16200021001), we get a palindrome (26212021262).

The spelling of 10012000261 in words is "ten billion, twelve million, two hundred sixty-one", and thus it is an aban number.