22202111081 has 2 divisors, whose sum is σ = 22202111082. Its totient is φ = 22202111080.

The previous prime is 22202111077. The next prime is 22202111083. The reversal of 22202111081 is 18011120222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22111690000 + 90421081 = 148700^2 + 9509^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202111081 - 2² = 22202111077 is a prime.

It is a super-3 number, since 3×22202111081³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 22202111083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22202111083) 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 as a sum of consecutive naturals, namely, 11101055540 + 11101055541.

It is an arithmetic number, because the mean of its divisors is an integer number (11101055541).

Almost surely, 2^22202111081 is an apocalyptic number.

It is an amenable number.

22202111081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202111081 is an equidigital number, since it uses as much as digits as its factorization.

22202111081 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 20.

The spelling of 22202111081 in words is "twenty-two billion, two hundred two million, one hundred eleven thousand, eighty-one".