22043596181 has 4 divisors (see below), whose sum is σ = 22092691500. Its totient is φ = 21994500864.

The previous prime is 22043596151. The next prime is 22043596189. The reversal of 22043596181 is 18169534022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18169534022 = 2 ⋅9084767011.

It can be written as a sum of positive squares in 2 ways, for example, as 16566264100 + 5477332081 = 128710^2 + 74009^2 .

It is a cyclic number.

It is not a de Polignac number, because 22043596181 - 2¹⁴ = 22043579797 is a prime.

It is a super-2 number, since 2×22043596181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22043596189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24546986 + ... + 24547883.

It is an arithmetic number, because the mean of its divisors is an integer number (5523172875).

Almost surely, 2^22043596181 is an apocalyptic number.

It is an amenable number.

22043596181 is a deficient number, since it is larger than the sum of its proper divisors (49095319).

22043596181 is an equidigital number, since it uses as much as digits as its factorization.

22043596181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49095318.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 22043596181 in words is "twenty-two billion, forty-three million, five hundred ninety-six thousand, one hundred eighty-one".