11000012221181 has 2 divisors, whose sum is σ = 11000012221182. Its totient is φ = 11000012221180.

The previous prime is 11000012221169. The next prime is 11000012221193. The reversal of 11000012221181 is 18112221000011.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11000012221169) and next prime (11000012221193).

It can be written as a sum of positive squares in only one way, i.e., 10866852913081 + 133159308100 = 3296491^2 + 364910^2 .

It is an emirp because it is prime and its reverse (18112221000011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11000012221181 - 2¹⁸ = 11000011959037 is a prime.

It is a super-2 number, since 2×11000012221181² (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 (11000012221981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500006110590 + 5500006110591.

It is an arithmetic number, because the mean of its divisors is an integer number (5500006110591).

Almost surely, 2^{11000012221181} is an apocalyptic number.

It is an amenable number.

11000012221181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000012221181 is an equidigital number, since it uses as much as digits as its factorization.

11000012221181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 11000012221181 its reverse (18112221000011), we get a palindrome (29112233221192).

The spelling of 11000012221181 in words is "eleven trillion, twelve million, two hundred twenty-one thousand, one hundred eighty-one".