11022022261 has 2 divisors, whose sum is σ = 11022022262. Its totient is φ = 11022022260.

The previous prime is 11022022259. The next prime is 11022022327. The reversal of 11022022261 is 16222022011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8254631025 + 2767391236 = 90855^2 + 52606^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022022261 - 2¹ = 11022022259 is a prime.

Together with 11022022259, 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 (11022026261) 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, 5511011130 + 5511011131.

It is an arithmetic number, because the mean of its divisors is an integer number (5511011131).

Almost surely, 2^11022022261 is an apocalyptic number.

It is an amenable number.

11022022261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11022022261 is an equidigital number, since it uses as much as digits as its factorization.

11022022261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11022022261 its reverse (16222022011), we get a palindrome (27244044272).

The spelling of 11022022261 in words is "eleven billion, twenty-two million, twenty-two thousand, two hundred sixty-one".