11220013213181 has 2 divisors, whose sum is σ = 11220013213182. Its totient is φ = 11220013213180.

The previous prime is 11220013213151. The next prime is 11220013213207. The reversal of 11220013213181 is 18131231002211.

It is a happy number.

It is an a-pointer prime, because the next prime (11220013213207) can be obtained adding 11220013213181 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8954852761156 + 2265160452025 = 2992466^2 + 1505045^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220013213181 - 2⁴² = 6821966702077 is a prime.

It is a super-2 number, since 2×11220013213181² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11220013213181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220013213151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610006606590 + 5610006606591.

It is an arithmetic number, because the mean of its divisors is an integer number (5610006606591).

Almost surely, 2^{11220013213181} is an apocalyptic number.

It is an amenable number.

11220013213181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220013213181 is an equidigital number, since it uses as much as digits as its factorization.

11220013213181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 11220013213181 its reverse (18131231002211), we get a palindrome (29351244215392).

The spelling of 11220013213181 in words is "eleven trillion, two hundred twenty billion, thirteen million, two hundred thirteen thousand, one hundred eighty-one".