22222271378 has 16 divisors (see below), whose sum is σ = 35314796664. Its totient is φ = 10451435520.

The previous prime is 22222271377. The next prime is 22222271411. The reversal of 22222271378 is 87317222222.

It can be written as a sum of positive squares in 4 ways, for example, as 21410420329 + 811851049 = 146323^2 + 28493^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22222271377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131375 + ... + 248402.

Almost surely, 2^22222271378 is an apocalyptic number.

22222271378 is a deficient number, since it is larger than the sum of its proper divisors (13092525286).

22222271378 is a wasteful number, since it uses less digits than its factorization.

22222271378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381517.

The product of its digits is 75264, while the sum is 38.

The spelling of 22222271378 in words is "twenty-two billion, two hundred twenty-two million, two hundred seventy-one thousand, three hundred seventy-eight".