222230111021 has 2 divisors, whose sum is σ = 222230111022. Its totient is φ = 222230111020.

The previous prime is 222230110987. The next prime is 222230111023. The reversal of 222230111021 is 120111032222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112301392996 + 109928718025 = 335114^2 + 331555^2 .

It is a cyclic number.

It is not a de Polignac number, because 222230111021 - 2⁶ = 222230110957 is a prime.

Together with 222230111023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222230111023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111115055510 + 111115055511.

It is an arithmetic number, because the mean of its divisors is an integer number (111115055511).

Almost surely, 2^222230111021 is an apocalyptic number.

It is an amenable number.

222230111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222230111021 is an equidigital number, since it uses as much as digits as its factorization.

222230111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 222230111021 its reverse (120111032222), we get a palindrome (342341143243).

It can be divided in two parts, 2222301 and 11021, that added together give a palindrome (2233322).

The spelling of 222230111021 in words is "two hundred twenty-two billion, two hundred thirty million, one hundred eleven thousand, twenty-one".