222021219377 has 2 divisors, whose sum is σ = 222021219378. Its totient is φ = 222021219376.

The previous prime is 222021219373. The next prime is 222021219379. The reversal of 222021219377 is 773912120222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144564206656 + 77457012721 = 380216^2 + 278311^2 .

It is a cyclic number.

It is not a de Polignac number, because 222021219377 - 2² = 222021219373 is a prime.

Together with 222021219379, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222021219377.

It is not a weakly prime, because it can be changed into another prime (222021219373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010609688 + 111010609689.

It is an arithmetic number, because the mean of its divisors is an integer number (111010609689).

Almost surely, 2^222021219377 is an apocalyptic number.

It is an amenable number.

222021219377 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021219377 is an equidigital number, since it uses as much as digits as its factorization.

222021219377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

Adding to 222021219377 its reverse (773912120222), we get a palindrome (995933339599).

The spelling of 222021219377 in words is "two hundred twenty-two billion, twenty-one million, two hundred nineteen thousand, three hundred seventy-seven".