2218222004 has 12 divisors (see below), whose sum is σ = 3907942500. Its totient is φ = 1101667008.

The previous prime is 2218222003. The next prime is 2218222009. The reversal of 2218222004 is 4002228122.

It can be written as a sum of positive squares in 2 ways, for example, as 259274404 + 1958947600 = 16102^2 + 44260^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218222001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1860329 + ... + 1861520.

It is an arithmetic number, because the mean of its divisors is an integer number (325661875).

Almost surely, 2^2218222004 is an apocalyptic number.

It is an amenable number.

2218222004 is a deficient number, since it is larger than the sum of its proper divisors (1689720496).

2218222004 is a wasteful number, since it uses less digits than its factorization.

2218222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722002 (or 3722000 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 2218222004 is about 47098.0042464646. The cubic root of 2218222004 is about 1304.1723938400.

The spelling of 2218222004 in words is "two billion, two hundred eighteen million, two hundred twenty-two thousand, four".