11021212200181 has 2 divisors, whose sum is σ = 11021212200182. Its totient is φ = 11021212200180.

The previous prime is 11021212200121. The next prime is 11021212200217. The reversal of 11021212200181 is 18100221212011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7141769863281 + 3879442336900 = 2672409^2 + 1969630^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021212200181 - 2²⁹ = 11020675329269 is a prime.

It is a super-2 number, since 2×11021212200181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021212200121) 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, 5510606100090 + 5510606100091.

It is an arithmetic number, because the mean of its divisors is an integer number (5510606100091).

Almost surely, 2^{11021212200181} is an apocalyptic number.

It is an amenable number.

11021212200181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021212200181 is an equidigital number, since it uses as much as digits as its factorization.

11021212200181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 11021212200181 its reverse (18100221212011), we get a palindrome (29121433412192).

The spelling of 11021212200181 in words is "eleven trillion, twenty-one billion, two hundred twelve million, two hundred thousand, one hundred eighty-one".