222222227777779 has 4 divisors (see below), whose sum is σ = 222227023607784. Its totient is φ = 222217431947776.

The previous prime is 222222227777731. The next prime is 222222227777789. The reversal of 222222227777779 is 977777722222222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222222227777779 - 2¹⁷ = 222222227646707 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (222222227777789) 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 in 3 ways as a sum of consecutive naturals, for example, 2397845497 + ... + 2397938170.

It is an arithmetic number, because the mean of its divisors is an integer number (55556755901946).

Almost surely, 2^{222222227777779} is an apocalyptic number.

222222227777779 is a deficient number, since it is larger than the sum of its proper divisors (4795830005).

222222227777779 is an equidigital number, since it uses as much as digits as its factorization.

222222227777779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795830004.

The product of its digits is 271063296, while the sum is 67.

The spelling of 222222227777779 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-seven million, seven hundred seventy-seven thousand, seven hundred seventy-nine".