11000212261 has 2 divisors, whose sum is σ = 11000212262. Its totient is φ = 11000212260.

The previous prime is 11000212259. The next prime is 11000212309. The reversal of 11000212261 is 16221200011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10348992900 + 651219361 = 101730^2 + 25519^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000212261 - 2¹ = 11000212259 is a prime.

Together with 11000212259, 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 (11000218261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500106130 + 5500106131.

It is an arithmetic number, because the mean of its divisors is an integer number (5500106131).

Almost surely, 2^11000212261 is an apocalyptic number.

It is an amenable number.

11000212261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000212261 is an equidigital number, since it uses as much as digits as its factorization.

11000212261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11000212261 its reverse (16221200011), we get a palindrome (27221412272).

The spelling of 11000212261 in words is "eleven billion, two hundred twelve thousand, two hundred sixty-one".