11021002010261 has 2 divisors, whose sum is σ = 11021002010262. Its totient is φ = 11021002010260.

The previous prime is 11021002010093. The next prime is 11021002010267. The reversal of 11021002010261 is 16201020012011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10819948418161 + 201053592100 = 3289369^2 + 448390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021002010261 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021002010267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510501005130 + 5510501005131.

It is an arithmetic number, because the mean of its divisors is an integer number (5510501005131).

Almost surely, 2^{11021002010261} is an apocalyptic number.

It is an amenable number.

11021002010261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021002010261 is an equidigital number, since it uses as much as digits as its factorization.

11021002010261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11021002010261 its reverse (16201020012011), we get a palindrome (27222022022272).

The spelling of 11021002010261 in words is "eleven trillion, twenty-one billion, two million, ten thousand, two hundred sixty-one".