222286819 has 2 divisors, whose sum is σ = 222286820. Its totient is φ = 222286818.

The previous prime is 222286817. The next prime is 222286837. The reversal of 222286819 is 918682222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222286819 - 2¹ = 222286817 is a prime.

It is a super-2 number, since 2×222286819² = 98822859802277522, which contains 22 as substring.

Together with 222286817, 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 (222286817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111143409 + 111143410.

It is an arithmetic number, because the mean of its divisors is an integer number (111143410).

Almost surely, 2^222286819 is an apocalyptic number.

222286819 is a deficient number, since it is larger than the sum of its proper divisors (1).

222286819 is an equidigital number, since it uses as much as digits as its factorization.

222286819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 222286819 is about 14909.2863343622. The cubic root of 222286819 is about 605.7655486591.

The spelling of 222286819 in words is "two hundred twenty-two million, two hundred eighty-six thousand, eight hundred nineteen".