2212002111181 has 2 divisors, whose sum is σ = 2212002111182. Its totient is φ = 2212002111180.

The previous prime is 2212002111157. The next prime is 2212002111239. The reversal of 2212002111181 is 1811112002122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1842374590281 + 369627520900 = 1357341^2 + 607970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212002111181 - 2¹¹ = 2212002109133 is a prime.

It is a super-2 number, since 2×2212002111181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212002114181) 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, 1106001055590 + 1106001055591.

It is an arithmetic number, because the mean of its divisors is an integer number (1106001055591).

Almost surely, 2^{2212002111181} is an apocalyptic number.

It is an amenable number.

2212002111181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212002111181 is an equidigital number, since it uses as much as digits as its factorization.

2212002111181 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.

The spelling of 2212002111181 in words is "two trillion, two hundred twelve billion, two million, one hundred eleven thousand, one hundred eighty-one".