222444557779 has 32 divisors (see below), whose sum is σ = 247530717504. Its totient is φ = 199024312320.

The previous prime is 222444557771. The next prime is 222444557831. The reversal of 222444557779 is 977755444222.

It is a happy number.

It is not a de Polignac number, because 222444557779 - 2³ = 222444557771 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 (222444557771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4196787 + ... + 4249459.

It is an arithmetic number, because the mean of its divisors is an integer number (7735334922).

Almost surely, 2^222444557779 is an apocalyptic number.

222444557779 is a deficient number, since it is larger than the sum of its proper divisors (25086159725).

222444557779 is a wasteful number, since it uses less digits than its factorization.

222444557779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52887.

The product of its digits is 39513600, while the sum is 58.

The spelling of 222444557779 in words is "two hundred twenty-two billion, four hundred forty-four million, five hundred fifty-seven thousand, seven hundred seventy-nine".