1012010261 has 2 divisors, whose sum is σ = 1012010262. Its totient is φ = 1012010260.

The previous prime is 1012010213. The next prime is 1012010287. The reversal of 1012010261 is 1620102101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832611025 + 179399236 = 28855^2 + 13394^2 .

It is an emirp because it is prime and its reverse (1620102101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012010261 - 2¹⁴ = 1011993877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012010201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506005130 + 506005131.

It is an arithmetic number, because the mean of its divisors is an integer number (506005131).

Almost surely, 2^1012010261 is an apocalyptic number.

It is an amenable number.

1012010261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012010261 is an equidigital number, since it uses as much as digits as its factorization.

1012010261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1012010261 is about 31812.1087166506. The cubic root of 1012010261 is about 1003.9874990507.

Adding to 1012010261 its reverse (1620102101), we get a palindrome (2632112362).

The spelling of 1012010261 in words is "one billion, twelve million, ten thousand, two hundred sixty-one".