22210111181 has 2 divisors, whose sum is σ = 22210111182. Its totient is φ = 22210111180.

The previous prime is 22210111139. The next prime is 22210111229. The reversal of 22210111181 is 18111101222.

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., 11635073956 + 10575037225 = 107866^2 + 102835^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210111181 - 2¹⁰ = 22210110157 is a prime.

It is a super-2 number, since 2×22210111181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22213111181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105055590 + 11105055591.

It is an arithmetic number, because the mean of its divisors is an integer number (11105055591).

Almost surely, 2^22210111181 is an apocalyptic number.

It is an amenable number.

22210111181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210111181 is an equidigital number, since it uses as much as digits as its factorization.

22210111181 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.

The spelling of 22210111181 in words is "twenty-two billion, two hundred ten million, one hundred eleven thousand, one hundred eighty-one".