222222227777778 has 64 divisors (see below), whose sum is σ = 471198113464320. Its totient is φ = 69626482848000.

The previous prime is 222222227777731. The next prime is 222222227777789. The reversal of 222222227777778 is 877777722222222.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254087013 + ... + 254960103.

It is an arithmetic number, because the mean of its divisors is an integer number (7362470522880).

Almost surely, 2^{222222227777778} is an apocalyptic number.

222222227777778 is an abundant number, since it is smaller than the sum of its proper divisors (248975885686542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222222227777778 is a wasteful number, since it uses less digits than its factorization.

222222227777778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876343.

The product of its digits is 240945152, while the sum is 66.

The spelling of 222222227777778 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-eight".