222222555 has 64 divisors (see below), whose sum is σ = 429770880. Its totient is φ = 108490752.

The previous prime is 222222547. The next prime is 222222557. The reversal of 222222555 is 555222222.

It is not a de Polignac number, because 222222555 - 2³ = 222222547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (222222557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83607 + ... + 86223.

It is an arithmetic number, because the mean of its divisors is an integer number (6715170).

Almost surely, 2^222222555 is an apocalyptic number.

222222555 is a deficient number, since it is larger than the sum of its proper divisors (207548325).

222222555 is a wasteful number, since it uses less digits than its factorization.

222222555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685 (or 2679 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 222222555 is about 14907.1310117004. The cubic root of 222222555 is about 605.7071666259.

Adding to 222222555 its reverse (555222222), we get a palindrome (777444777).

The spelling of 222222555 in words is "two hundred twenty-two million, two hundred twenty-two thousand, five hundred fifty-five".