10320100261 has 2 divisors, whose sum is σ = 10320100262. Its totient is φ = 10320100260.

The previous prime is 10320100183. The next prime is 10320100303. The reversal of 10320100261 is 16200102301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8557360036 + 1762740225 = 92506^2 + 41985^2 .

It is an emirp because it is prime and its reverse (16200102301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10320100261 - 2¹¹ = 10320098213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10320100361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160050130 + 5160050131.

It is an arithmetic number, because the mean of its divisors is an integer number (5160050131).

Almost surely, 2^10320100261 is an apocalyptic number.

It is an amenable number.

10320100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10320100261 is an equidigital number, since it uses as much as digits as its factorization.

10320100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10320100261 its reverse (16200102301), we get a palindrome (26520202562).

The spelling of 10320100261 in words is "ten billion, three hundred twenty million, one hundred thousand, two hundred sixty-one".