2188555222 has 16 divisors (see below), whose sum is σ = 3767382432. Its totient is φ = 934058880.

The previous prime is 2188555211. The next prime is 2188555247. The reversal of 2188555222 is 2225558812.

2188555222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320953 + ... + 327700.

It is an arithmetic number, because the mean of its divisors is an integer number (235461402).

Almost surely, 2^2188555222 is an apocalyptic number.

2188555222 is a deficient number, since it is larger than the sum of its proper divisors (1578827210).

2188555222 is a wasteful number, since it uses less digits than its factorization.

2188555222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648903.

The product of its digits is 128000, while the sum is 40.

The square root of 2188555222 is about 46781.9967722627. The cubic root of 2188555222 is about 1298.3322246327.

The spelling of 2188555222 in words is "two billion, one hundred eighty-eight million, five hundred fifty-five thousand, two hundred twenty-two".